[OE-core] [morty][PATCH 1/3] binutils: fix CVE-2017-6969 in readelf
Yuanjie Huang
yuanjie.huang at windriver.com
Wed May 31 08:37:57 UTC 2017
CVE: CVE-2017-6969
[BZ 21156] -- https://sourceware.org/bugzilla/show_bug.cgi?id=21156
PR binutils/21156: Fix illegal memory accesses in readelf when
ing a corrupt binary.
PR binutils/21156: Fix another memory access error in readelf when
parsing a corrupt binary.
Signed-off-by: Yuanjie Huang <yuanjie.huang at windriver.com>
---
meta/recipes-devtools/binutils/binutils-2.27.inc | 2 +
.../binutils/binutils/CVE-2017-6969.patch | 56 ++++++++++
.../binutils/binutils/CVE-2017-6969_2.patch | 122 +++++++++++++++++++++
3 files changed, 180 insertions(+)
create mode 100644 meta/recipes-devtools/binutils/binutils/CVE-2017-6969.patch
create mode 100644 meta/recipes-devtools/binutils/binutils/CVE-2017-6969_2.patch
diff --git a/meta/recipes-devtools/binutils/binutils-2.27.inc b/meta/recipes-devtools/binutils/binutils-2.27.inc
index f98fef9e02..d32ce25dd5 100644
--- a/meta/recipes-devtools/binutils/binutils-2.27.inc
+++ b/meta/recipes-devtools/binutils/binutils-2.27.inc
@@ -41,6 +41,8 @@ SRC_URI = "\
file://0001-ppc-apuinfo-for-spe-parsed-incorrectly.patch \
file://CVE-2017-6965.patch \
file://CVE-2017-6966.patch \
+ file://CVE-2017-6969.patch \
+ file://CVE-2017-6969_2.patch \
"
S = "${WORKDIR}/git"
diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2017-6969.patch b/meta/recipes-devtools/binutils/binutils/CVE-2017-6969.patch
new file mode 100644
index 0000000000..3d036c4cf6
--- /dev/null
+++ b/meta/recipes-devtools/binutils/binutils/CVE-2017-6969.patch
@@ -0,0 +1,56 @@
+From 489246368e2c49a795ad5ecbc8895cbc854292fa Mon Sep 17 00:00:00 2001
+From: Nick Clifton <nickc at redhat.com>
+Date: Fri, 17 Feb 2017 15:59:45 +0000
+Subject: Fix illegal memory accesses in readelf when parsing a corrupt binary.
+
+ PR binutils/21156
+ * readelf.c (find_section_in_set): Test for invalid section
+ indicies.
+
+CVE: CVE-2017-6969
+Upstream-Status: Backport [master]
+
+Signed-off-by: Yuanjie Huang <yuanjie.huang at windriver.com>
+---
+ binutils/ChangeLog | 6 ++++++
+ binutils/readelf.c | 10 ++++++++--
+ 2 files changed, 14 insertions(+), 2 deletions(-)
+
+diff --git a/binutils/ChangeLog b/binutils/ChangeLog
+index a70bdb7a7b..dbf8eb079e 100644
+--- a/binutils/ChangeLog
++++ b/binutils/ChangeLog
+@@ -1,3 +1,9 @@
++2017-02-17 Nick Clifton <nickc at redhat.com>
++
++ PR binutils/21156
++ * readelf.c (find_section_in_set): Test for invalid section
++ indicies.
++
+ 2016-08-03 Tristan Gingold <gingold at adacore.com>
+
+ * configure: Regenerate.
+diff --git a/binutils/readelf.c b/binutils/readelf.c
+index d31558c3b4..7f7365dbc5 100644
+--- a/binutils/readelf.c
++++ b/binutils/readelf.c
+@@ -674,8 +674,14 @@ find_section_in_set (const char * name, unsigned int * set)
+ if (set != NULL)
+ {
+ while ((i = *set++) > 0)
+- if (streq (SECTION_NAME (section_headers + i), name))
+- return section_headers + i;
++ {
++ /* See PR 21156 for a reproducer. */
++ if (i >= elf_header.e_shnum)
++ continue; /* FIXME: Should we issue an error message ? */
++
++ if (streq (SECTION_NAME (section_headers + i), name))
++ return section_headers + i;
++ }
+ }
+
+ return find_section (name);
+--
+2.11.0
+
diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2017-6969_2.patch b/meta/recipes-devtools/binutils/binutils/CVE-2017-6969_2.patch
new file mode 100644
index 0000000000..491c7086ee
--- /dev/null
+++ b/meta/recipes-devtools/binutils/binutils/CVE-2017-6969_2.patch
@@ -0,0 +1,122 @@
+From 59fcd64fe65a89fb0acaf5463840310701189375 Mon Sep 17 00:00:00 2001
+From: Nick Clifton <nickc at redhat.com>
+Date: Mon, 20 Feb 2017 14:40:39 +0000
+Subject: Fix another memory access error in readelf when parsing a corrupt
+ binary.
+
+ PR binutils/21156
+ * dwarf.c (cu_tu_indexes_read): Move into...
+ (load_cu_tu_indexes): ... here. Change the variable into
+ tri-state. Change the function into boolean, returning
+ false if the indicies could not be loaded.
+ (find_cu_tu_set): Return NULL if the indicies could not be
+ loaded.
+
+CVE: CVE-2017-6969
+Upstream-Status: Backport [master]
+
+Signed-off-by: Yuanjie Huang <yuanjie.huang at windriver.com>
+---
+ binutils/ChangeLog | 10 ++++++++++
+ binutils/dwarf.c | 34 ++++++++++++++++++++--------------
+ 2 files changed, 30 insertions(+), 14 deletions(-)
+
+diff --git a/binutils/ChangeLog b/binutils/ChangeLog
+index dbf8eb079e..55d2f8ba40 100644
+--- a/binutils/ChangeLog
++++ b/binutils/ChangeLog
+@@ -1,3 +1,13 @@
++2017-02-20 Nick Clifton <nickc at redhat.com>
++
++ PR binutils/21156
++ * dwarf.c (cu_tu_indexes_read): Move into...
++ (load_cu_tu_indexes): ... here. Change the variable into
++ tri-state. Change the function into boolean, returning
++ false if the indicies could not be loaded.
++ (find_cu_tu_set): Return NULL if the indicies could not be
++ loaded.
++
+ 2017-02-17 Nick Clifton <nickc at redhat.com>
+
+ PR binutils/21156
+diff --git a/binutils/dwarf.c b/binutils/dwarf.c
+index 282e069958..a23267feb6 100644
+--- a/binutils/dwarf.c
++++ b/binutils/dwarf.c
+@@ -76,7 +76,6 @@ int dwarf_check = 0;
+ as a zero-terminated list of section indexes comprising one set of debug
+ sections from a .dwo file. */
+
+-static int cu_tu_indexes_read = 0;
+ static unsigned int *shndx_pool = NULL;
+ static unsigned int shndx_pool_size = 0;
+ static unsigned int shndx_pool_used = 0;
+@@ -99,7 +98,7 @@ static int tu_count = 0;
+ static struct cu_tu_set *cu_sets = NULL;
+ static struct cu_tu_set *tu_sets = NULL;
+
+-static void load_cu_tu_indexes (void *file);
++static bfd_boolean load_cu_tu_indexes (void *);
+
+ /* Values for do_debug_lines. */
+ #define FLAG_DEBUG_LINES_RAW 1
+@@ -2713,7 +2712,7 @@ load_debug_info (void * file)
+ return num_debug_info_entries;
+
+ /* If this is a DWARF package file, load the CU and TU indexes. */
+- load_cu_tu_indexes (file);
++ (void) load_cu_tu_indexes (file);
+
+ if (load_debug_section (info, file)
+ && process_debug_info (&debug_displays [info].section, file, abbrev, 1, 0))
+@@ -7302,21 +7301,27 @@ process_cu_tu_index (struct dwarf_section *section, int do_display)
+ section sets that we can use to associate a .debug_info.dwo section
+ with its associated .debug_abbrev.dwo section in a .dwp file. */
+
+-static void
++static bfd_boolean
+ load_cu_tu_indexes (void *file)
+ {
++ static int cu_tu_indexes_read = -1; /* Tri-state variable. */
++
+ /* If we have already loaded (or tried to load) the CU and TU indexes
+ then do not bother to repeat the task. */
+- if (cu_tu_indexes_read)
+- return;
+-
+- if (load_debug_section (dwp_cu_index, file))
+- process_cu_tu_index (&debug_displays [dwp_cu_index].section, 0);
+-
+- if (load_debug_section (dwp_tu_index, file))
+- process_cu_tu_index (&debug_displays [dwp_tu_index].section, 0);
++ if (cu_tu_indexes_read == -1)
++ {
++ cu_tu_indexes_read = TRUE;
++
++ if (load_debug_section (dwp_cu_index, file))
++ if (! process_cu_tu_index (&debug_displays [dwp_cu_index].section, 0))
++ cu_tu_indexes_read = FALSE;
++
++ if (load_debug_section (dwp_tu_index, file))
++ if (! process_cu_tu_index (&debug_displays [dwp_tu_index].section, 0))
++ cu_tu_indexes_read = FALSE;
++ }
+
+- cu_tu_indexes_read = 1;
++ return (bfd_boolean) cu_tu_indexes_read;
+ }
+
+ /* Find the set of sections that includes section SHNDX. */
+@@ -7326,7 +7331,8 @@ find_cu_tu_set (void *file, unsigned int shndx)
+ {
+ unsigned int i;
+
+- load_cu_tu_indexes (file);
++ if (! load_cu_tu_indexes (file))
++ return NULL;
+
+ /* Find SHNDX in the shndx pool. */
+ for (i = 0; i < shndx_pool_used; i++)
+--
+2.11.0
+
--
2.11.0
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