[OE-core] [PATCH 3/4] glibc: CVE-2015-9761
Armin Kuster
akuster808 at gmail.com
Mon Jan 25 19:25:06 UTC 2016
From: Armin Kuster <akuster at mvista.com>
A stack overflow vulnerability was found in nan* functions that could cause
applications which process long strings with the nan function to crash or,
potentially, execute arbitrary code.
Signed-off-by: Armin Kuster <akuster at mvista.com>
---
.../recipes-core/glibc/glibc/CVE-2015-9761_1.patch | 1039 ++++++++++++++++++++
.../recipes-core/glibc/glibc/CVE-2015-9761_2.patch | 385 ++++++++
meta/recipes-core/glibc/glibc_2.22.bb | 2 +
3 files changed, 1426 insertions(+)
create mode 100644 meta/recipes-core/glibc/glibc/CVE-2015-9761_1.patch
create mode 100644 meta/recipes-core/glibc/glibc/CVE-2015-9761_2.patch
diff --git a/meta/recipes-core/glibc/glibc/CVE-2015-9761_1.patch b/meta/recipes-core/glibc/glibc/CVE-2015-9761_1.patch
new file mode 100644
index 0000000..3aca913
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/CVE-2015-9761_1.patch
@@ -0,0 +1,1039 @@
+From e02cabecf0d025ec4f4ddee290bdf7aadb873bb3 Mon Sep 17 00:00:00 2001
+From: Joseph Myers <joseph at codesourcery.com>
+Date: Tue, 24 Nov 2015 22:24:52 +0000
+Subject: [PATCH] Refactor strtod parsing of NaN payloads.
+
+The nan* functions handle their string argument by constructing a
+NAN(...) string on the stack as a VLA and passing it to strtod
+functions.
+
+This approach has problems discussed in bug 16961 and bug 16962: the
+stack usage is unbounded, and it gives incorrect results in certain
+cases where the argument is not a valid n-char-sequence.
+
+The natural fix for both issues is to refactor the NaN payload parsing
+out of strtod into a separate function that the nan* functions can
+call directly, so that no temporary string needs constructing on the
+stack at all. This patch does that refactoring in preparation for
+fixing those bugs (but without actually using the new functions from
+nan* - which will also require exporting them from libc at version
+GLIBC_PRIVATE). This patch is not intended to change any user-visible
+behavior, so no tests are added (fixes for the above bugs will of
+course add tests for them).
+
+This patch builds on my recent fixes for strtol and strtod issues in
+Turkish locales. Given those fixes, the parsing of NaN payloads is
+locale-independent; thus, the new functions do not need to take a
+locale_t argument.
+
+Tested for x86_64, x86, mips64 and powerpc.
+
+ * stdlib/strtod_nan.c: New file.
+ * stdlib/strtod_nan_double.h: Likewise.
+ * stdlib/strtod_nan_float.h: Likewise.
+ * stdlib/strtod_nan_main.c: Likewise.
+ * stdlib/strtod_nan_narrow.h: Likewise.
+ * stdlib/strtod_nan_wide.h: Likewise.
+ * stdlib/strtof_nan.c: Likewise.
+ * stdlib/strtold_nan.c: Likewise.
+ * sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h: Likewise.
+ * sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h: Likewise.
+ * sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h: Likewise.
+ * wcsmbs/wcstod_nan.c: Likewise.
+ * wcsmbs/wcstof_nan.c: Likewise.
+ * wcsmbs/wcstold_nan.c: Likewise.
+ * stdlib/Makefile (routines): Add strtof_nan, strtod_nan and
+ strtold_nan.
+ * wcsmbs/Makefile (routines): Add wcstod_nan, wcstold_nan and
+ wcstof_nan.
+ * include/stdlib.h (__strtof_nan): Declare and use
+ libc_hidden_proto.
+ (__strtod_nan): Likewise.
+ (__strtold_nan): Likewise.
+ (__wcstof_nan): Likewise.
+ (__wcstod_nan): Likewise.
+ (__wcstold_nan): Likewise.
+ * include/wchar.h (____wcstoull_l_internal): Declare.
+ * stdlib/strtod_l.c: Do not include <ieee754.h>.
+ (____strtoull_l_internal): Remove declaration.
+ (STRTOF_NAN): Define macro.
+ (SET_MANTISSA): Remove macro.
+ (STRTOULL): Likewise.
+ (____STRTOF_INTERNAL): Use STRTOF_NAN to parse NaN payload.
+ * stdlib/strtof_l.c (____strtoull_l_internal): Remove declaration.
+ (STRTOF_NAN): Define macro.
+ (SET_MANTISSA): Remove macro.
+ * sysdeps/ieee754/ldbl-128/strtold_l.c (STRTOF_NAN): Define macro.
+ (SET_MANTISSA): Remove macro.
+ * sysdeps/ieee754/ldbl-128ibm/strtold_l.c (STRTOF_NAN): Define
+ macro.
+ (SET_MANTISSA): Remove macro.
+ * sysdeps/ieee754/ldbl-64-128/strtold_l.c (STRTOF_NAN): Define
+ macro.
+ (SET_MANTISSA): Remove macro.
+ * sysdeps/ieee754/ldbl-96/strtold_l.c (STRTOF_NAN): Define macro.
+ (SET_MANTISSA): Remove macro.
+ * wcsmbs/wcstod_l.c (____wcstoull_l_internal): Remove declaration.
+ * wcsmbs/wcstof_l.c (____wcstoull_l_internal): Likewise.
+ * wcsmbs/wcstold_l.c (____wcstoull_l_internal): Likewise.
+
+Upstream-Status: Backport
+CVE: CVE-2015-9761 patch #1
+[Yocto # 8980]
+
+https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e02cabecf0d025ec4f4ddee290bdf7aadb873bb3
+
+Signed-off-by: Armin Kuster <akuster at mvista.com>
+
+---
+ ChangeLog | 49 ++++++++++++++++++
+ include/stdlib.h | 18 +++++++
+ include/wchar.h | 3 ++
+ stdlib/Makefile | 1 +
+ stdlib/strtod_l.c | 48 ++++--------------
+ stdlib/strtod_nan.c | 24 +++++++++
+ stdlib/strtod_nan_double.h | 30 +++++++++++
+ stdlib/strtod_nan_float.h | 29 +++++++++++
+ stdlib/strtod_nan_main.c | 63 ++++++++++++++++++++++++
+ stdlib/strtod_nan_narrow.h | 22 +++++++++
+ stdlib/strtod_nan_wide.h | 22 +++++++++
+ stdlib/strtof_l.c | 11 +----
+ stdlib/strtof_nan.c | 24 +++++++++
+ stdlib/strtold_nan.c | 30 +++++++++++
+ sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h | 33 +++++++++++++
+ sysdeps/ieee754/ldbl-128/strtold_l.c | 13 +----
+ sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h | 30 +++++++++++
+ sysdeps/ieee754/ldbl-128ibm/strtold_l.c | 10 +---
+ sysdeps/ieee754/ldbl-64-128/strtold_l.c | 13 +----
+ sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h | 30 +++++++++++
+ sysdeps/ieee754/ldbl-96/strtold_l.c | 10 +---
+ wcsmbs/Makefile | 1 +
+ wcsmbs/wcstod_l.c | 3 --
+ wcsmbs/wcstod_nan.c | 23 +++++++++
+ wcsmbs/wcstof_l.c | 3 --
+ wcsmbs/wcstof_nan.c | 23 +++++++++
+ wcsmbs/wcstold_l.c | 3 --
+ wcsmbs/wcstold_nan.c | 30 +++++++++++
+ 28 files changed, 504 insertions(+), 95 deletions(-)
+ create mode 100644 stdlib/strtod_nan.c
+ create mode 100644 stdlib/strtod_nan_double.h
+ create mode 100644 stdlib/strtod_nan_float.h
+ create mode 100644 stdlib/strtod_nan_main.c
+ create mode 100644 stdlib/strtod_nan_narrow.h
+ create mode 100644 stdlib/strtod_nan_wide.h
+ create mode 100644 stdlib/strtof_nan.c
+ create mode 100644 stdlib/strtold_nan.c
+ create mode 100644 sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h
+ create mode 100644 sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h
+ create mode 100644 sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h
+ create mode 100644 wcsmbs/wcstod_nan.c
+ create mode 100644 wcsmbs/wcstof_nan.c
+ create mode 100644 wcsmbs/wcstold_nan.c
+
+Index: git/include/stdlib.h
+===================================================================
+--- git.orig/include/stdlib.h
++++ git/include/stdlib.h
+@@ -203,6 +203,24 @@ libc_hidden_proto (strtoll)
+ libc_hidden_proto (strtoul)
+ libc_hidden_proto (strtoull)
+
++extern float __strtof_nan (const char *, char **, char) internal_function;
++extern double __strtod_nan (const char *, char **, char) internal_function;
++extern long double __strtold_nan (const char *, char **, char)
++ internal_function;
++extern float __wcstof_nan (const wchar_t *, wchar_t **, wchar_t)
++ internal_function;
++extern double __wcstod_nan (const wchar_t *, wchar_t **, wchar_t)
++ internal_function;
++extern long double __wcstold_nan (const wchar_t *, wchar_t **, wchar_t)
++ internal_function;
++
++libc_hidden_proto (__strtof_nan)
++libc_hidden_proto (__strtod_nan)
++libc_hidden_proto (__strtold_nan)
++libc_hidden_proto (__wcstof_nan)
++libc_hidden_proto (__wcstod_nan)
++libc_hidden_proto (__wcstold_nan)
++
+ extern char *__ecvt (double __value, int __ndigit, int *__restrict __decpt,
+ int *__restrict __sign);
+ extern char *__fcvt (double __value, int __ndigit, int *__restrict __decpt,
+Index: git/include/wchar.h
+===================================================================
+--- git.orig/include/wchar.h
++++ git/include/wchar.h
+@@ -52,6 +52,9 @@ extern unsigned long long int __wcstoull
+ __restrict __endptr,
+ int __base,
+ int __group) __THROW;
++extern unsigned long long int ____wcstoull_l_internal (const wchar_t *,
++ wchar_t **, int, int,
++ __locale_t);
+ libc_hidden_proto (__wcstof_internal)
+ libc_hidden_proto (__wcstod_internal)
+ libc_hidden_proto (__wcstold_internal)
+Index: git/stdlib/Makefile
+===================================================================
+--- git.orig/stdlib/Makefile
++++ git/stdlib/Makefile
+@@ -51,6 +51,7 @@ routines-y := \
+ strtol_l strtoul_l strtoll_l strtoull_l \
+ strtof strtod strtold \
+ strtof_l strtod_l strtold_l \
++ strtof_nan strtod_nan strtold_nan \
+ system canonicalize \
+ a64l l64a \
+ getsubopt xpg_basename \
+Index: git/stdlib/strtod_l.c
+===================================================================
+--- git.orig/stdlib/strtod_l.c
++++ git/stdlib/strtod_l.c
+@@ -21,8 +21,6 @@
+ #include <xlocale.h>
+
+ extern double ____strtod_l_internal (const char *, char **, int, __locale_t);
+-extern unsigned long long int ____strtoull_l_internal (const char *, char **,
+- int, int, __locale_t);
+
+ /* Configuration part. These macros are defined by `strtold.c',
+ `strtof.c', `wcstod.c', `wcstold.c', and `wcstof.c' to produce the
+@@ -34,27 +32,20 @@ extern unsigned long long int ____strtou
+ # ifdef USE_WIDE_CHAR
+ # define STRTOF wcstod_l
+ # define __STRTOF __wcstod_l
++# define STRTOF_NAN __wcstod_nan
+ # else
+ # define STRTOF strtod_l
+ # define __STRTOF __strtod_l
++# define STRTOF_NAN __strtod_nan
+ # endif
+ # define MPN2FLOAT __mpn_construct_double
+ # define FLOAT_HUGE_VAL HUGE_VAL
+-# define SET_MANTISSA(flt, mant) \
+- do { union ieee754_double u; \
+- u.d = (flt); \
+- u.ieee_nan.mantissa0 = (mant) >> 32; \
+- u.ieee_nan.mantissa1 = (mant); \
+- if ((u.ieee.mantissa0 | u.ieee.mantissa1) != 0) \
+- (flt) = u.d; \
+- } while (0)
+ #endif
+ /* End of configuration part. */
+
+ #include <ctype.h>
+ #include <errno.h>
+ #include <float.h>
+-#include <ieee754.h>
+ #include "../locale/localeinfo.h"
+ #include <locale.h>
+ #include <math.h>
+@@ -105,7 +96,6 @@ extern unsigned long long int ____strtou
+ # define TOLOWER_C(Ch) __towlower_l ((Ch), _nl_C_locobj_ptr)
+ # define STRNCASECMP(S1, S2, N) \
+ __wcsncasecmp_l ((S1), (S2), (N), _nl_C_locobj_ptr)
+-# define STRTOULL(S, E, B) ____wcstoull_l_internal ((S), (E), (B), 0, loc)
+ #else
+ # define STRING_TYPE char
+ # define CHAR_TYPE char
+@@ -117,7 +107,6 @@ extern unsigned long long int ____strtou
+ # define TOLOWER_C(Ch) __tolower_l ((Ch), _nl_C_locobj_ptr)
+ # define STRNCASECMP(S1, S2, N) \
+ __strncasecmp_l ((S1), (S2), (N), _nl_C_locobj_ptr)
+-# define STRTOULL(S, E, B) ____strtoull_l_internal ((S), (E), (B), 0, loc)
+ #endif
+
+
+@@ -668,33 +657,14 @@ ____STRTOF_INTERNAL (nptr, endptr, group
+ if (*cp == L_('('))
+ {
+ const STRING_TYPE *startp = cp;
+- do
+- ++cp;
+- while ((*cp >= L_('0') && *cp <= L_('9'))
+- || ({ CHAR_TYPE lo = TOLOWER (*cp);
+- lo >= L_('a') && lo <= L_('z'); })
+- || *cp == L_('_'));
+-
+- if (*cp != L_(')'))
+- /* The closing brace is missing. Only match the NAN
+- part. */
+- cp = startp;
++ STRING_TYPE *endp;
++ retval = STRTOF_NAN (cp + 1, &endp, L_(')'));
++ if (*endp == L_(')'))
++ /* Consume the closing parenthesis. */
++ cp = endp + 1;
+ else
+- {
+- /* This is a system-dependent way to specify the
+- bitmask used for the NaN. We expect it to be
+- a number which is put in the mantissa of the
+- number. */
+- STRING_TYPE *endp;
+- unsigned long long int mant;
+-
+- mant = STRTOULL (startp + 1, &endp, 0);
+- if (endp == cp)
+- SET_MANTISSA (retval, mant);
+-
+- /* Consume the closing brace. */
+- ++cp;
+- }
++ /* Only match the NAN part. */
++ cp = startp;
+ }
+
+ if (endptr != NULL)
+Index: git/stdlib/strtod_nan.c
+===================================================================
+--- /dev/null
++++ git/stdlib/strtod_nan.c
+@@ -0,0 +1,24 @@
++/* Convert string for NaN payload to corresponding NaN. Narrow
++ strings, double.
++ Copyright (C) 2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <strtod_nan_narrow.h>
++#include <strtod_nan_double.h>
++
++#define STRTOD_NAN __strtod_nan
++#include <strtod_nan_main.c>
+Index: git/stdlib/strtod_nan_double.h
+===================================================================
+--- /dev/null
++++ git/stdlib/strtod_nan_double.h
+@@ -0,0 +1,30 @@
++/* Convert string for NaN payload to corresponding NaN. For double.
++ Copyright (C) 1997-2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#define FLOAT double
++#define SET_MANTISSA(flt, mant) \
++ do \
++ { \
++ union ieee754_double u; \
++ u.d = (flt); \
++ u.ieee_nan.mantissa0 = (mant) >> 32; \
++ u.ieee_nan.mantissa1 = (mant); \
++ if ((u.ieee.mantissa0 | u.ieee.mantissa1) != 0) \
++ (flt) = u.d; \
++ } \
++ while (0)
+Index: git/stdlib/strtod_nan_float.h
+===================================================================
+--- /dev/null
++++ git/stdlib/strtod_nan_float.h
+@@ -0,0 +1,29 @@
++/* Convert string for NaN payload to corresponding NaN. For float.
++ Copyright (C) 1997-2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#define FLOAT float
++#define SET_MANTISSA(flt, mant) \
++ do \
++ { \
++ union ieee754_float u; \
++ u.f = (flt); \
++ u.ieee_nan.mantissa = (mant); \
++ if (u.ieee.mantissa != 0) \
++ (flt) = u.f; \
++ } \
++ while (0)
+Index: git/stdlib/strtod_nan_main.c
+===================================================================
+--- /dev/null
++++ git/stdlib/strtod_nan_main.c
+@@ -0,0 +1,63 @@
++/* Convert string for NaN payload to corresponding NaN.
++ Copyright (C) 1997-2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <ieee754.h>
++#include <locale.h>
++#include <math.h>
++#include <stdlib.h>
++#include <wchar.h>
++
++
++/* If STR starts with an optional n-char-sequence as defined by ISO C
++ (a sequence of ASCII letters, digits and underscores), followed by
++ ENDC, return a NaN whose payload is set based on STR. Otherwise,
++ return a default NAN. If ENDPTR is not NULL, set *ENDPTR to point
++ to the character after the initial n-char-sequence. */
++
++internal_function
++FLOAT
++STRTOD_NAN (const STRING_TYPE *str, STRING_TYPE **endptr, STRING_TYPE endc)
++{
++ const STRING_TYPE *cp = str;
++
++ while ((*cp >= L_('0') && *cp <= L_('9'))
++ || (*cp >= L_('A') && *cp <= L_('Z'))
++ || (*cp >= L_('a') && *cp <= L_('z'))
++ || *cp == L_('_'))
++ ++cp;
++
++ FLOAT retval = NAN;
++ if (*cp != endc)
++ goto out;
++
++ /* This is a system-dependent way to specify the bitmask used for
++ the NaN. We expect it to be a number which is put in the
++ mantissa of the number. */
++ STRING_TYPE *endp;
++ unsigned long long int mant;
++
++ mant = STRTOULL (str, &endp, 0);
++ if (endp == cp)
++ SET_MANTISSA (retval, mant);
++
++ out:
++ if (endptr != NULL)
++ *endptr = (STRING_TYPE *) cp;
++ return retval;
++}
++libc_hidden_def (STRTOD_NAN)
+Index: git/stdlib/strtod_nan_narrow.h
+===================================================================
+--- /dev/null
++++ git/stdlib/strtod_nan_narrow.h
+@@ -0,0 +1,22 @@
++/* Convert string for NaN payload to corresponding NaN. Narrow strings.
++ Copyright (C) 1997-2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#define STRING_TYPE char
++#define L_(Ch) Ch
++#define STRTOULL(S, E, B) ____strtoull_l_internal ((S), (E), (B), 0, \
++ _nl_C_locobj_ptr)
+Index: git/stdlib/strtod_nan_wide.h
+===================================================================
+--- /dev/null
++++ git/stdlib/strtod_nan_wide.h
+@@ -0,0 +1,22 @@
++/* Convert string for NaN payload to corresponding NaN. Wide strings.
++ Copyright (C) 1997-2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#define STRING_TYPE wchar_t
++#define L_(Ch) L##Ch
++#define STRTOULL(S, E, B) ____wcstoull_l_internal ((S), (E), (B), 0, \
++ _nl_C_locobj_ptr)
+Index: git/stdlib/strtof_l.c
+===================================================================
+--- git.orig/stdlib/strtof_l.c
++++ git/stdlib/strtof_l.c
+@@ -20,26 +20,19 @@
+ #include <xlocale.h>
+
+ extern float ____strtof_l_internal (const char *, char **, int, __locale_t);
+-extern unsigned long long int ____strtoull_l_internal (const char *, char **,
+- int, int, __locale_t);
+
+ #define FLOAT float
+ #define FLT FLT
+ #ifdef USE_WIDE_CHAR
+ # define STRTOF wcstof_l
+ # define __STRTOF __wcstof_l
++# define STRTOF_NAN __wcstof_nan
+ #else
+ # define STRTOF strtof_l
+ # define __STRTOF __strtof_l
++# define STRTOF_NAN __strtof_nan
+ #endif
+ #define MPN2FLOAT __mpn_construct_float
+ #define FLOAT_HUGE_VAL HUGE_VALF
+-#define SET_MANTISSA(flt, mant) \
+- do { union ieee754_float u; \
+- u.f = (flt); \
+- u.ieee_nan.mantissa = (mant); \
+- if (u.ieee.mantissa != 0) \
+- (flt) = u.f; \
+- } while (0)
+
+ #include "strtod_l.c"
+Index: git/stdlib/strtof_nan.c
+===================================================================
+--- /dev/null
++++ git/stdlib/strtof_nan.c
+@@ -0,0 +1,24 @@
++/* Convert string for NaN payload to corresponding NaN. Narrow
++ strings, float.
++ Copyright (C) 2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <strtod_nan_narrow.h>
++#include <strtod_nan_float.h>
++
++#define STRTOD_NAN __strtof_nan
++#include <strtod_nan_main.c>
+Index: git/stdlib/strtold_nan.c
+===================================================================
+--- /dev/null
++++ git/stdlib/strtold_nan.c
+@@ -0,0 +1,30 @@
++/* Convert string for NaN payload to corresponding NaN. Narrow
++ strings, long double.
++ Copyright (C) 2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <math.h>
++
++/* This function is unused if long double and double have the same
++ representation. */
++#ifndef __NO_LONG_DOUBLE_MATH
++# include <strtod_nan_narrow.h>
++# include <strtod_nan_ldouble.h>
++
++# define STRTOD_NAN __strtold_nan
++# include <strtod_nan_main.c>
++#endif
+Index: git/sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h
+===================================================================
+--- /dev/null
++++ git/sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h
+@@ -0,0 +1,33 @@
++/* Convert string for NaN payload to corresponding NaN. For ldbl-128.
++ Copyright (C) 1997-2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#define FLOAT long double
++#define SET_MANTISSA(flt, mant) \
++ do \
++ { \
++ union ieee854_long_double u; \
++ u.d = (flt); \
++ u.ieee_nan.mantissa0 = 0; \
++ u.ieee_nan.mantissa1 = 0; \
++ u.ieee_nan.mantissa2 = (mant) >> 32; \
++ u.ieee_nan.mantissa3 = (mant); \
++ if ((u.ieee.mantissa0 | u.ieee.mantissa1 \
++ | u.ieee.mantissa2 | u.ieee.mantissa3) != 0) \
++ (flt) = u.d; \
++ } \
++ while (0)
+Index: git/sysdeps/ieee754/ldbl-128/strtold_l.c
+===================================================================
+--- git.orig/sysdeps/ieee754/ldbl-128/strtold_l.c
++++ git/sysdeps/ieee754/ldbl-128/strtold_l.c
+@@ -25,22 +25,13 @@
+ #ifdef USE_WIDE_CHAR
+ # define STRTOF wcstold_l
+ # define __STRTOF __wcstold_l
++# define STRTOF_NAN __wcstold_nan
+ #else
+ # define STRTOF strtold_l
+ # define __STRTOF __strtold_l
++# define STRTOF_NAN __strtold_nan
+ #endif
+ #define MPN2FLOAT __mpn_construct_long_double
+ #define FLOAT_HUGE_VAL HUGE_VALL
+-#define SET_MANTISSA(flt, mant) \
+- do { union ieee854_long_double u; \
+- u.d = (flt); \
+- u.ieee_nan.mantissa0 = 0; \
+- u.ieee_nan.mantissa1 = 0; \
+- u.ieee_nan.mantissa2 = (mant) >> 32; \
+- u.ieee_nan.mantissa3 = (mant); \
+- if ((u.ieee.mantissa0 | u.ieee.mantissa1 \
+- | u.ieee.mantissa2 | u.ieee.mantissa3) != 0) \
+- (flt) = u.d; \
+- } while (0)
+
+ #include <strtod_l.c>
+Index: git/sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h
+===================================================================
+--- /dev/null
++++ git/sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h
+@@ -0,0 +1,30 @@
++/* Convert string for NaN payload to corresponding NaN. For ldbl-128ibm.
++ Copyright (C) 1997-2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#define FLOAT long double
++#define SET_MANTISSA(flt, mant) \
++ do \
++ { \
++ union ibm_extended_long_double u; \
++ u.ld = (flt); \
++ u.d[0].ieee_nan.mantissa0 = (mant) >> 32; \
++ u.d[0].ieee_nan.mantissa1 = (mant); \
++ if ((u.d[0].ieee.mantissa0 | u.d[0].ieee.mantissa1) != 0) \
++ (flt) = u.ld; \
++ } \
++ while (0)
+Index: git/sysdeps/ieee754/ldbl-128ibm/strtold_l.c
+===================================================================
+--- git.orig/sysdeps/ieee754/ldbl-128ibm/strtold_l.c
++++ git/sysdeps/ieee754/ldbl-128ibm/strtold_l.c
+@@ -30,25 +30,19 @@ extern long double ____new_wcstold_l (co
+ # define STRTOF __new_wcstold_l
+ # define __STRTOF ____new_wcstold_l
+ # define ____STRTOF_INTERNAL ____wcstold_l_internal
++# define STRTOF_NAN __wcstold_nan
+ #else
+ extern long double ____new_strtold_l (const char *, char **, __locale_t);
+ # define STRTOF __new_strtold_l
+ # define __STRTOF ____new_strtold_l
+ # define ____STRTOF_INTERNAL ____strtold_l_internal
++# define STRTOF_NAN __strtold_nan
+ #endif
+ extern __typeof (__STRTOF) STRTOF;
+ libc_hidden_proto (__STRTOF)
+ libc_hidden_proto (STRTOF)
+ #define MPN2FLOAT __mpn_construct_long_double
+ #define FLOAT_HUGE_VAL HUGE_VALL
+-# define SET_MANTISSA(flt, mant) \
+- do { union ibm_extended_long_double u; \
+- u.ld = (flt); \
+- u.d[0].ieee_nan.mantissa0 = (mant) >> 32; \
+- u.d[0].ieee_nan.mantissa1 = (mant); \
+- if ((u.d[0].ieee.mantissa0 | u.d[0].ieee.mantissa1) != 0) \
+- (flt) = u.ld; \
+- } while (0)
+
+ #include <strtod_l.c>
+
+Index: git/sysdeps/ieee754/ldbl-64-128/strtold_l.c
+===================================================================
+--- git.orig/sysdeps/ieee754/ldbl-64-128/strtold_l.c
++++ git/sysdeps/ieee754/ldbl-64-128/strtold_l.c
+@@ -30,28 +30,19 @@ extern long double ____new_wcstold_l (co
+ # define STRTOF __new_wcstold_l
+ # define __STRTOF ____new_wcstold_l
+ # define ____STRTOF_INTERNAL ____wcstold_l_internal
++# define STRTOF_NAN __wcstold_nan
+ #else
+ extern long double ____new_strtold_l (const char *, char **, __locale_t);
+ # define STRTOF __new_strtold_l
+ # define __STRTOF ____new_strtold_l
+ # define ____STRTOF_INTERNAL ____strtold_l_internal
++# define STRTOF_NAN __strtold_nan
+ #endif
+ extern __typeof (__STRTOF) STRTOF;
+ libc_hidden_proto (__STRTOF)
+ libc_hidden_proto (STRTOF)
+ #define MPN2FLOAT __mpn_construct_long_double
+ #define FLOAT_HUGE_VAL HUGE_VALL
+-#define SET_MANTISSA(flt, mant) \
+- do { union ieee854_long_double u; \
+- u.d = (flt); \
+- u.ieee_nan.mantissa0 = 0; \
+- u.ieee_nan.mantissa1 = 0; \
+- u.ieee_nan.mantissa2 = (mant) >> 32; \
+- u.ieee_nan.mantissa3 = (mant); \
+- if ((u.ieee.mantissa0 | u.ieee.mantissa1 \
+- | u.ieee.mantissa2 | u.ieee.mantissa3) != 0) \
+- (flt) = u.d; \
+- } while (0)
+
+ #include <strtod_l.c>
+
+Index: git/sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h
+===================================================================
+--- /dev/null
++++ git/sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h
+@@ -0,0 +1,30 @@
++/* Convert string for NaN payload to corresponding NaN. For ldbl-96.
++ Copyright (C) 1997-2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#define FLOAT long double
++#define SET_MANTISSA(flt, mant) \
++ do \
++ { \
++ union ieee854_long_double u; \
++ u.d = (flt); \
++ u.ieee_nan.mantissa0 = (mant) >> 32; \
++ u.ieee_nan.mantissa1 = (mant); \
++ if ((u.ieee.mantissa0 | u.ieee.mantissa1) != 0) \
++ (flt) = u.d; \
++ } \
++ while (0)
+Index: git/sysdeps/ieee754/ldbl-96/strtold_l.c
+===================================================================
+--- git.orig/sysdeps/ieee754/ldbl-96/strtold_l.c
++++ git/sysdeps/ieee754/ldbl-96/strtold_l.c
+@@ -25,19 +25,13 @@
+ #ifdef USE_WIDE_CHAR
+ # define STRTOF wcstold_l
+ # define __STRTOF __wcstold_l
++# define STRTOF_NAN __wcstold_nan
+ #else
+ # define STRTOF strtold_l
+ # define __STRTOF __strtold_l
++# define STRTOF_NAN __strtold_nan
+ #endif
+ #define MPN2FLOAT __mpn_construct_long_double
+ #define FLOAT_HUGE_VAL HUGE_VALL
+-#define SET_MANTISSA(flt, mant) \
+- do { union ieee854_long_double u; \
+- u.d = (flt); \
+- u.ieee_nan.mantissa0 = (mant) >> 32; \
+- u.ieee_nan.mantissa1 = (mant); \
+- if ((u.ieee.mantissa0 | u.ieee.mantissa1) != 0) \
+- (flt) = u.d; \
+- } while (0)
+
+ #include <stdlib/strtod_l.c>
+Index: git/wcsmbs/Makefile
+===================================================================
+--- git.orig/wcsmbs/Makefile
++++ git/wcsmbs/Makefile
+@@ -39,6 +39,7 @@ routines-$(OPTION_POSIX_C_LANG_WIDE_CHAR
+ wcstol wcstoul wcstoll wcstoull wcstod wcstold wcstof \
+ wcstol_l wcstoul_l wcstoll_l wcstoull_l \
+ wcstod_l wcstold_l wcstof_l \
++ wcstod_nan wcstold_nan wcstof_nan \
+ wcscoll wcsxfrm \
+ wcwidth wcswidth \
+ wcscoll_l wcsxfrm_l \
+Index: git/wcsmbs/wcstod_l.c
+===================================================================
+--- git.orig/wcsmbs/wcstod_l.c
++++ git/wcsmbs/wcstod_l.c
+@@ -23,9 +23,6 @@
+
+ extern double ____wcstod_l_internal (const wchar_t *, wchar_t **, int,
+ __locale_t);
+-extern unsigned long long int ____wcstoull_l_internal (const wchar_t *,
+- wchar_t **, int, int,
+- __locale_t);
+
+ #define USE_WIDE_CHAR 1
+
+Index: git/wcsmbs/wcstod_nan.c
+===================================================================
+--- /dev/null
++++ git/wcsmbs/wcstod_nan.c
+@@ -0,0 +1,23 @@
++/* Convert string for NaN payload to corresponding NaN. Wide strings, double.
++ Copyright (C) 2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include "../stdlib/strtod_nan_wide.h"
++#include "../stdlib/strtod_nan_double.h"
++
++#define STRTOD_NAN __wcstod_nan
++#include "../stdlib/strtod_nan_main.c"
+Index: git/wcsmbs/wcstof_l.c
+===================================================================
+--- git.orig/wcsmbs/wcstof_l.c
++++ git/wcsmbs/wcstof_l.c
+@@ -25,8 +25,5 @@
+
+ extern float ____wcstof_l_internal (const wchar_t *, wchar_t **, int,
+ __locale_t);
+-extern unsigned long long int ____wcstoull_l_internal (const wchar_t *,
+- wchar_t **, int, int,
+- __locale_t);
+
+ #include <stdlib/strtof_l.c>
+Index: git/wcsmbs/wcstof_nan.c
+===================================================================
+--- /dev/null
++++ git/wcsmbs/wcstof_nan.c
+@@ -0,0 +1,23 @@
++/* Convert string for NaN payload to corresponding NaN. Wide strings, float.
++ Copyright (C) 2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include "../stdlib/strtod_nan_wide.h"
++#include "../stdlib/strtod_nan_float.h"
++
++#define STRTOD_NAN __wcstof_nan
++#include "../stdlib/strtod_nan_main.c"
+Index: git/wcsmbs/wcstold_l.c
+===================================================================
+--- git.orig/wcsmbs/wcstold_l.c
++++ git/wcsmbs/wcstold_l.c
+@@ -24,8 +24,5 @@
+
+ extern long double ____wcstold_l_internal (const wchar_t *, wchar_t **, int,
+ __locale_t);
+-extern unsigned long long int ____wcstoull_l_internal (const wchar_t *,
+- wchar_t **, int, int,
+- __locale_t);
+
+ #include <strtold_l.c>
+Index: git/wcsmbs/wcstold_nan.c
+===================================================================
+--- /dev/null
++++ git/wcsmbs/wcstold_nan.c
+@@ -0,0 +1,30 @@
++/* Convert string for NaN payload to corresponding NaN. Wide strings,
++ long double.
++ Copyright (C) 2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <math.h>
++
++/* This function is unused if long double and double have the same
++ representation. */
++#ifndef __NO_LONG_DOUBLE_MATH
++# include "../stdlib/strtod_nan_wide.h"
++# include <strtod_nan_ldouble.h>
++
++# define STRTOD_NAN __wcstold_nan
++# include "../stdlib/strtod_nan_main.c"
++#endif
+Index: git/ChangeLog
+===================================================================
+--- git.orig/ChangeLog
++++ git/ChangeLog
+@@ -1,3 +1,57 @@
++2015-11-24 Joseph Myers <joseph at codesourcery.com>
++
++ * stdlib/strtod_nan.c: New file.
++ * stdlib/strtod_nan_double.h: Likewise.
++ * stdlib/strtod_nan_float.h: Likewise.
++ * stdlib/strtod_nan_main.c: Likewise.
++ * stdlib/strtod_nan_narrow.h: Likewise.
++ * stdlib/strtod_nan_wide.h: Likewise.
++ * stdlib/strtof_nan.c: Likewise.
++ * stdlib/strtold_nan.c: Likewise.
++ * sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h: Likewise.
++ * sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h: Likewise.
++ * sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h: Likewise.
++ * wcsmbs/wcstod_nan.c: Likewise.
++ * wcsmbs/wcstof_nan.c: Likewise.
++ * wcsmbs/wcstold_nan.c: Likewise.
++ * stdlib/Makefile (routines): Add strtof_nan, strtod_nan and
++ strtold_nan.
++ * wcsmbs/Makefile (routines): Add wcstod_nan, wcstold_nan and
++ wcstof_nan.
++ * include/stdlib.h (__strtof_nan): Declare and use
++ libc_hidden_proto.
++ (__strtod_nan): Likewise.
++ (__strtold_nan): Likewise.
++ (__wcstof_nan): Likewise.
++ (__wcstod_nan): Likewise.
++ (__wcstold_nan): Likewise.
++ * include/wchar.h (____wcstoull_l_internal): Declare.
++ * stdlib/strtod_l.c: Do not include <ieee754.h>.
++ (____strtoull_l_internal): Remove declaration.
++ (STRTOF_NAN): Define macro.
++ (SET_MANTISSA): Remove macro.
++ (STRTOULL): Likewise.
++ (____STRTOF_INTERNAL): Use STRTOF_NAN to parse NaN payload.
++ * stdlib/strtof_l.c (____strtoull_l_internal): Remove declaration.
++ (STRTOF_NAN): Define macro.
++ (SET_MANTISSA): Remove macro.
++ * sysdeps/ieee754/ldbl-128/strtold_l.c (STRTOF_NAN): Define macro.
++ (SET_MANTISSA): Remove macro.
++ * sysdeps/ieee754/ldbl-128ibm/strtold_l.c (STRTOF_NAN): Define
++ macro.
++ (SET_MANTISSA): Remove macro.
++ * sysdeps/ieee754/ldbl-64-128/strtold_l.c (STRTOF_NAN): Define
++ macro.
++ (SET_MANTISSA): Remove macro.
++ * sysdeps/ieee754/ldbl-96/strtold_l.c (STRTOF_NAN): Define macro.
++ (SET_MANTISSA): Remove macro.
++ * wcsmbs/wcstod_l.c (____wcstoull_l_internal): Remove declaration.
++ * wcsmbs/wcstof_l.c (____wcstoull_l_internal): Likewise.
++ * wcsmbs/wcstold_l.c (____wcstoull_l_internal): Likewise.
++
++ [BZ #19266]
++ * stdlib/strtod_l.c (____STRTOF_INTERNAL): Check directly for
++ upper case and lower case letters inside NAN(), not using TOLOWER.
+ 2015-08-08 Paul Pluzhnikov <ppluzhnikov at google.com>
+
+ [BZ #17905]
diff --git a/meta/recipes-core/glibc/glibc/CVE-2015-9761_2.patch b/meta/recipes-core/glibc/glibc/CVE-2015-9761_2.patch
new file mode 100644
index 0000000..e30307f
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/CVE-2015-9761_2.patch
@@ -0,0 +1,385 @@
+From 8f5e8b01a1da2a207228f2072c934fa5918554b8 Mon Sep 17 00:00:00 2001
+From: Joseph Myers <joseph at codesourcery.com>
+Date: Fri, 4 Dec 2015 20:36:28 +0000
+Subject: [PATCH] Fix nan functions handling of payload strings (bug 16961, bug
+ 16962).
+
+The nan, nanf and nanl functions handle payload strings by doing e.g.:
+
+ if (tagp[0] != '\0')
+ {
+ char buf[6 + strlen (tagp)];
+ sprintf (buf, "NAN(%s)", tagp);
+ return strtod (buf, NULL);
+ }
+
+This is an unbounded stack allocation based on the length of the
+argument. Furthermore, if the argument starts with an n-char-sequence
+followed by ')', that n-char-sequence is wrongly treated as
+significant for determining the payload of the resulting NaN, when ISO
+C says the call should be equivalent to strtod ("NAN", NULL), without
+being affected by that initial n-char-sequence. This patch fixes both
+those problems by using the __strtod_nan etc. functions recently
+factored out of strtod etc. for that purpose, with those functions
+being exported from libc at version GLIBC_PRIVATE.
+
+Tested for x86_64, x86, mips64 and powerpc.
+
+ [BZ #16961]
+ [BZ #16962]
+ * math/s_nan.c (__nan): Use __strtod_nan instead of constructing a
+ string on the stack for strtod.
+ * math/s_nanf.c (__nanf): Use __strtof_nan instead of constructing
+ a string on the stack for strtof.
+ * math/s_nanl.c (__nanl): Use __strtold_nan instead of
+ constructing a string on the stack for strtold.
+ * stdlib/Versions (libc): Add __strtof_nan, __strtod_nan and
+ __strtold_nan to GLIBC_PRIVATE.
+ * math/test-nan-overflow.c: New file.
+ * math/test-nan-payload.c: Likewise.
+ * math/Makefile (tests): Add test-nan-overflow and
+ test-nan-payload.
+
+Upstream-Status: Backport
+CVE: CVE-2015-9761 patch #2
+[Yocto # 8980]
+
+https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8f5e8b01a1da2a207228f2072c934fa5918554b8
+
+Signed-off-by: Armin Kuster <akuster at mvista.com>
+
+---
+ ChangeLog | 17 +++++++
+ NEWS | 6 +++
+ math/Makefile | 3 +-
+ math/s_nan.c | 9 +---
+ math/s_nanf.c | 9 +---
+ math/s_nanl.c | 9 +---
+ math/test-nan-overflow.c | 66 +++++++++++++++++++++++++
+ math/test-nan-payload.c | 122 +++++++++++++++++++++++++++++++++++++++++++++++
+ stdlib/Versions | 1 +
+ 9 files changed, 217 insertions(+), 25 deletions(-)
+ create mode 100644 math/test-nan-overflow.c
+ create mode 100644 math/test-nan-payload.c
+
+Index: git/ChangeLog
+===================================================================
+--- git.orig/ChangeLog
++++ git/ChangeLog
+@@ -1,3 +1,20 @@
++2015-12-04 Joseph Myers <joseph at codesourcery.com>
++
++ [BZ #16961]
++ [BZ #16962]
++ * math/s_nan.c (__nan): Use __strtod_nan instead of constructing a
++ string on the stack for strtod.
++ * math/s_nanf.c (__nanf): Use __strtof_nan instead of constructing
++ a string on the stack for strtof.
++ * math/s_nanl.c (__nanl): Use __strtold_nan instead of
++ constructing a string on the stack for strtold.
++ * stdlib/Versions (libc): Add __strtof_nan, __strtod_nan and
++ __strtold_nan to GLIBC_PRIVATE.
++ * math/test-nan-overflow.c: New file.
++ * math/test-nan-payload.c: Likewise.
++ * math/Makefile (tests): Add test-nan-overflow and
++ test-nan-payload.
++
+ 2015-11-24 Joseph Myers <joseph at codesourcery.com>
+
+ * stdlib/strtod_nan.c: New file.
+Index: git/NEWS
+===================================================================
+--- git.orig/NEWS
++++ git/NEWS
+@@ -99,6 +99,12 @@ Version 2.22
+
+ Version 2.21
+
++Security related changes:
++
++* The nan, nanf and nanl functions no longer have unbounded stack usage
++ depending on the length of the string passed as an argument to the
++ functions. Reported by Joseph Myers.
++
+ * The following bugs are resolved with this release:
+
+ 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
+Index: git/math/Makefile
+===================================================================
+--- git.orig/math/Makefile
++++ git/math/Makefile
+@@ -110,6 +110,7 @@ tests = test-matherr test-fenv atest-exp
+ test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
+ test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
+ test-fenv-tls test-fenv-preserve test-fenv-return test-fenvinline \
++ test-nan-overflow test-nan-payload \
+ $(tests-static)
+ tests-static = test-fpucw-static test-fpucw-ieee-static
+ # We do the `long double' tests only if this data type is available and
+Index: git/math/s_nan.c
+===================================================================
+--- git.orig/math/s_nan.c
++++ git/math/s_nan.c
+@@ -28,14 +28,7 @@
+ double
+ __nan (const char *tagp)
+ {
+- if (tagp[0] != '\0')
+- {
+- char buf[6 + strlen (tagp)];
+- sprintf (buf, "NAN(%s)", tagp);
+- return strtod (buf, NULL);
+- }
+-
+- return NAN;
++ return __strtod_nan (tagp, NULL, 0);
+ }
+ weak_alias (__nan, nan)
+ #ifdef NO_LONG_DOUBLE
+Index: git/math/s_nanf.c
+===================================================================
+--- git.orig/math/s_nanf.c
++++ git/math/s_nanf.c
+@@ -28,13 +28,6 @@
+ float
+ __nanf (const char *tagp)
+ {
+- if (tagp[0] != '\0')
+- {
+- char buf[6 + strlen (tagp)];
+- sprintf (buf, "NAN(%s)", tagp);
+- return strtof (buf, NULL);
+- }
+-
+- return NAN;
++ return __strtof_nan (tagp, NULL, 0);
+ }
+ weak_alias (__nanf, nanf)
+Index: git/math/s_nanl.c
+===================================================================
+--- git.orig/math/s_nanl.c
++++ git/math/s_nanl.c
+@@ -28,13 +28,6 @@
+ long double
+ __nanl (const char *tagp)
+ {
+- if (tagp[0] != '\0')
+- {
+- char buf[6 + strlen (tagp)];
+- sprintf (buf, "NAN(%s)", tagp);
+- return strtold (buf, NULL);
+- }
+-
+- return NAN;
++ return __strtold_nan (tagp, NULL, 0);
+ }
+ weak_alias (__nanl, nanl)
+Index: git/math/test-nan-overflow.c
+===================================================================
+--- /dev/null
++++ git/math/test-nan-overflow.c
+@@ -0,0 +1,66 @@
++/* Test nan functions stack overflow (bug 16962).
++ Copyright (C) 2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <math.h>
++#include <stdio.h>
++#include <string.h>
++#include <sys/resource.h>
++
++#define STACK_LIM 1048576
++#define STRING_SIZE (2 * STACK_LIM)
++
++static int
++do_test (void)
++{
++ int result = 0;
++ struct rlimit lim;
++ getrlimit (RLIMIT_STACK, &lim);
++ lim.rlim_cur = STACK_LIM;
++ setrlimit (RLIMIT_STACK, &lim);
++ char *nanstr = malloc (STRING_SIZE);
++ if (nanstr == NULL)
++ {
++ puts ("malloc failed, cannot test");
++ return 77;
++ }
++ memset (nanstr, '0', STRING_SIZE - 1);
++ nanstr[STRING_SIZE - 1] = 0;
++#define NAN_TEST(TYPE, FUNC) \
++ do \
++ { \
++ char *volatile p = nanstr; \
++ volatile TYPE v = FUNC (p); \
++ if (isnan (v)) \
++ puts ("PASS: " #FUNC); \
++ else \
++ { \
++ puts ("FAIL: " #FUNC); \
++ result = 1; \
++ } \
++ } \
++ while (0)
++ NAN_TEST (float, nanf);
++ NAN_TEST (double, nan);
++#ifndef NO_LONG_DOUBLE
++ NAN_TEST (long double, nanl);
++#endif
++ return result;
++}
++
++#define TEST_FUNCTION do_test ()
++#include "../test-skeleton.c"
+Index: git/math/test-nan-payload.c
+===================================================================
+--- /dev/null
++++ git/math/test-nan-payload.c
+@@ -0,0 +1,122 @@
++/* Test nan functions payload handling (bug 16961).
++ Copyright (C) 2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <float.h>
++#include <math.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++
++/* Avoid built-in functions. */
++#define WRAP_NAN(FUNC, STR) \
++ ({ const char *volatile wns = (STR); FUNC (wns); })
++#define WRAP_STRTO(FUNC, STR) \
++ ({ const char *volatile wss = (STR); FUNC (wss, NULL); })
++
++#define CHECK_IS_NAN(TYPE, A) \
++ do \
++ { \
++ if (isnan (A)) \
++ puts ("PASS: " #TYPE " " #A); \
++ else \
++ { \
++ puts ("FAIL: " #TYPE " " #A); \
++ result = 1; \
++ } \
++ } \
++ while (0)
++
++#define CHECK_SAME_NAN(TYPE, A, B) \
++ do \
++ { \
++ if (memcmp (&(A), &(B), sizeof (A)) == 0) \
++ puts ("PASS: " #TYPE " " #A " = " #B); \
++ else \
++ { \
++ puts ("FAIL: " #TYPE " " #A " = " #B); \
++ result = 1; \
++ } \
++ } \
++ while (0)
++
++#define CHECK_DIFF_NAN(TYPE, A, B) \
++ do \
++ { \
++ if (memcmp (&(A), &(B), sizeof (A)) != 0) \
++ puts ("PASS: " #TYPE " " #A " != " #B); \
++ else \
++ { \
++ puts ("FAIL: " #TYPE " " #A " != " #B); \
++ result = 1; \
++ } \
++ } \
++ while (0)
++
++/* Cannot test payloads by memcmp for formats where NaNs have padding
++ bits. */
++#define CAN_TEST_EQ(MANT_DIG) ((MANT_DIG) != 64 && (MANT_DIG) != 106)
++
++#define RUN_TESTS(TYPE, SFUNC, FUNC, MANT_DIG) \
++ do \
++ { \
++ TYPE n123 = WRAP_NAN (FUNC, "123"); \
++ CHECK_IS_NAN (TYPE, n123); \
++ TYPE s123 = WRAP_STRTO (SFUNC, "NAN(123)"); \
++ CHECK_IS_NAN (TYPE, s123); \
++ TYPE n456 = WRAP_NAN (FUNC, "456"); \
++ CHECK_IS_NAN (TYPE, n456); \
++ TYPE s456 = WRAP_STRTO (SFUNC, "NAN(456)"); \
++ CHECK_IS_NAN (TYPE, s456); \
++ TYPE n123x = WRAP_NAN (FUNC, "123)"); \
++ CHECK_IS_NAN (TYPE, n123x); \
++ TYPE nemp = WRAP_NAN (FUNC, ""); \
++ CHECK_IS_NAN (TYPE, nemp); \
++ TYPE semp = WRAP_STRTO (SFUNC, "NAN()"); \
++ CHECK_IS_NAN (TYPE, semp); \
++ TYPE sx = WRAP_STRTO (SFUNC, "NAN"); \
++ CHECK_IS_NAN (TYPE, sx); \
++ if (CAN_TEST_EQ (MANT_DIG)) \
++ CHECK_SAME_NAN (TYPE, n123, s123); \
++ if (CAN_TEST_EQ (MANT_DIG)) \
++ CHECK_SAME_NAN (TYPE, n456, s456); \
++ if (CAN_TEST_EQ (MANT_DIG)) \
++ CHECK_SAME_NAN (TYPE, nemp, semp); \
++ if (CAN_TEST_EQ (MANT_DIG)) \
++ CHECK_SAME_NAN (TYPE, n123x, sx); \
++ CHECK_DIFF_NAN (TYPE, n123, n456); \
++ CHECK_DIFF_NAN (TYPE, n123, nemp); \
++ CHECK_DIFF_NAN (TYPE, n123, n123x); \
++ CHECK_DIFF_NAN (TYPE, n456, nemp); \
++ CHECK_DIFF_NAN (TYPE, n456, n123x); \
++ } \
++ while (0)
++
++static int
++do_test (void)
++{
++ int result = 0;
++ RUN_TESTS (float, strtof, nanf, FLT_MANT_DIG);
++ RUN_TESTS (double, strtod, nan, DBL_MANT_DIG);
++#ifndef NO_LONG_DOUBLE
++ RUN_TESTS (long double, strtold, nanl, LDBL_MANT_DIG);
++#endif
++ return result;
++}
++
++#define TEST_FUNCTION do_test ()
++#include "../test-skeleton.c"
+Index: git/stdlib/Versions
+===================================================================
+--- git.orig/stdlib/Versions
++++ git/stdlib/Versions
+@@ -118,5 +118,6 @@ libc {
+ # Used from other libraries
+ __libc_secure_getenv;
+ __call_tls_dtors;
++ __strtof_nan; __strtod_nan; __strtold_nan;
+ }
+ }
diff --git a/meta/recipes-core/glibc/glibc_2.22.bb b/meta/recipes-core/glibc/glibc_2.22.bb
index 382c992..9205066 100644
--- a/meta/recipes-core/glibc/glibc_2.22.bb
+++ b/meta/recipes-core/glibc/glibc_2.22.bb
@@ -43,6 +43,8 @@ SRC_URI = "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \
file://0028-Clear-ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA-for-prel.patch \
file://CVE-2015-8777.patch \
file://CVE-2015-8779.patch \
+ file://CVE-2015-9761_1.patch \
+ file://CVE-2015-9761_2.patch \
"
SRC_URI += "\
--
2.3.5
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