[OE-core] [PATCH] busybox: backport upstream fixes for unzip
Andre McCurdy
armccurdy at gmail.com
Wed Dec 2 18:41:46 UTC 2015
http://git.busybox.net/busybox/commit/?h=1_24_stable&id=6767af17f11144c7cd3cfe9ef799d7f89a78fe65
http://git.busybox.net/busybox/commit/?h=1_24_stable&id=092fabcf1df5d46cd22be4ffcd3b871f6180eb9c
Signed-off-by: Andre McCurdy <armccurdy at gmail.com>
---
.../busybox/busybox-1.24.1-unzip-regression.patch | 143 +++++++++++++++++++++
.../busybox/busybox/busybox-1.24.1-unzip.patch | 118 +++++++++++++++++
meta/recipes-core/busybox/busybox_1.24.1.bb | 2 +
3 files changed, 263 insertions(+)
create mode 100644 meta/recipes-core/busybox/busybox/busybox-1.24.1-unzip-regression.patch
create mode 100644 meta/recipes-core/busybox/busybox/busybox-1.24.1-unzip.patch
diff --git a/meta/recipes-core/busybox/busybox/busybox-1.24.1-unzip-regression.patch b/meta/recipes-core/busybox/busybox/busybox-1.24.1-unzip-regression.patch
new file mode 100644
index 0000000..e3c5020
--- /dev/null
+++ b/meta/recipes-core/busybox/busybox/busybox-1.24.1-unzip-regression.patch
@@ -0,0 +1,143 @@
+Upstream-Status: Backport
+
+ http://busybox.net/downloads/fixes-1.24.1/
+ http://git.busybox.net/busybox/commit/?id=092fabcf1df5d46cd22be4ffcd3b871f6180eb9c
+ http://git.busybox.net/busybox/commit/?h=1_24_stable&id=092fabcf1df5d46cd22be4ffcd3b871f6180eb9c
+
+Signed-off-by: Andre McCurdy <armccurdy at gmail.com>
+
+From 092fabcf1df5d46cd22be4ffcd3b871f6180eb9c Mon Sep 17 00:00:00 2001
+From: Denys Vlasenko <vda.linux at googlemail.com>
+Date: Fri, 30 Oct 2015 23:41:53 +0100
+Subject: [PATCH] [g]unzip: fix recent breakage.
+
+Also, do emit error message we so painstakingly pass from gzip internals
+
+Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
+(cherry picked from commit 6bd3fff51aa74e2ee2d87887b12182a3b09792ef)
+Signed-off-by: Mike Frysinger <vapier at gentoo.org>
+---
+ archival/libarchive/decompress_gunzip.c | 33 +++++++++++++++++++++------------
+ testsuite/unzip.tests | 1 +
+ 2 files changed, 22 insertions(+), 12 deletions(-)
+
+diff --git a/archival/libarchive/decompress_gunzip.c b/archival/libarchive/decompress_gunzip.c
+index c76fd31..357c9bf 100644
+--- a/archival/libarchive/decompress_gunzip.c
++++ b/archival/libarchive/decompress_gunzip.c
+@@ -309,8 +309,7 @@ static int huft_build(const unsigned *b, const unsigned n,
+ huft_t *q; /* points to current table */
+ huft_t r; /* table entry for structure assignment */
+ huft_t *u[BMAX]; /* table stack */
+- unsigned v[N_MAX]; /* values in order of bit length */
+- unsigned v_end;
++ unsigned v[N_MAX + 1]; /* values in order of bit length. last v[] is never used */
+ int ws[BMAX + 1]; /* bits decoded stack */
+ int w; /* bits decoded */
+ unsigned x[BMAX + 1]; /* bit offsets, then code stack */
+@@ -365,15 +364,17 @@ static int huft_build(const unsigned *b, const unsigned n,
+ *xp++ = j;
+ }
+
+- /* Make a table of values in order of bit lengths */
++ /* Make a table of values in order of bit lengths.
++ * To detect bad input, unused v[i]'s are set to invalid value UINT_MAX.
++ * In particular, last v[i] is never filled and must not be accessed.
++ */
++ memset(v, 0xff, sizeof(v));
+ p = b;
+ i = 0;
+- v_end = 0;
+ do {
+ j = *p++;
+ if (j != 0) {
+ v[x[j]++] = i;
+- v_end = x[j];
+ }
+ } while (++i < n);
+
+@@ -435,7 +436,9 @@ static int huft_build(const unsigned *b, const unsigned n,
+
+ /* set up table entry in r */
+ r.b = (unsigned char) (k - w);
+- if (p >= v + v_end) { // Was "if (p >= v + n)" but v[] can be shorter!
++ if (/*p >= v + n || -- redundant, caught by the second check: */
++ *p == UINT_MAX /* do we access uninited v[i]? (see memset(v))*/
++ ) {
+ r.e = 99; /* out of values--invalid code */
+ } else if (*p < s) {
+ r.e = (unsigned char) (*p < 256 ? 16 : 15); /* 256 is EOB code */
+@@ -520,8 +523,9 @@ static NOINLINE int inflate_codes(STATE_PARAM_ONLY)
+ e = t->e;
+ if (e > 16)
+ do {
+- if (e == 99)
+- abort_unzip(PASS_STATE_ONLY);;
++ if (e == 99) {
++ abort_unzip(PASS_STATE_ONLY);
++ }
+ bb >>= t->b;
+ k -= t->b;
+ e -= 16;
+@@ -557,8 +561,9 @@ static NOINLINE int inflate_codes(STATE_PARAM_ONLY)
+ e = t->e;
+ if (e > 16)
+ do {
+- if (e == 99)
++ if (e == 99) {
+ abort_unzip(PASS_STATE_ONLY);
++ }
+ bb >>= t->b;
+ k -= t->b;
+ e -= 16;
+@@ -824,8 +829,9 @@ static int inflate_block(STATE_PARAM smallint *e)
+
+ b_dynamic >>= 4;
+ k_dynamic -= 4;
+- if (nl > 286 || nd > 30)
++ if (nl > 286 || nd > 30) {
+ abort_unzip(PASS_STATE_ONLY); /* bad lengths */
++ }
+
+ /* read in bit-length-code lengths */
+ for (j = 0; j < nb; j++) {
+@@ -906,12 +912,14 @@ static int inflate_block(STATE_PARAM smallint *e)
+ bl = lbits;
+
+ i = huft_build(ll, nl, 257, cplens, cplext, &inflate_codes_tl, &bl);
+- if (i != 0)
++ if (i != 0) {
+ abort_unzip(PASS_STATE_ONLY);
++ }
+ bd = dbits;
+ i = huft_build(ll + nl, nd, 0, cpdist, cpdext, &inflate_codes_td, &bd);
+- if (i != 0)
++ if (i != 0) {
+ abort_unzip(PASS_STATE_ONLY);
++ }
+
+ /* set up data for inflate_codes() */
+ inflate_codes_setup(PASS_STATE bl, bd);
+@@ -999,6 +1007,7 @@ inflate_unzip_internal(STATE_PARAM transformer_state_t *xstate)
+ error_msg = "corrupted data";
+ if (setjmp(error_jmp)) {
+ /* Error from deep inside zip machinery */
++ bb_error_msg(error_msg);
+ n = -1;
+ goto ret;
+ }
+diff --git a/testsuite/unzip.tests b/testsuite/unzip.tests
+index ca0a458..d8738a3 100755
+--- a/testsuite/unzip.tests
++++ b/testsuite/unzip.tests
+@@ -34,6 +34,7 @@ rm foo.zip
+ testing "unzip (bad archive)" "uudecode; unzip bad.zip 2>&1; echo \$?" \
+ "Archive: bad.zip
+ inflating: ]3j½r«IK-%Ix
++unzip: corrupted data
+ unzip: inflate error
+ 1
+ " \
+--
+2.6.2
+
diff --git a/meta/recipes-core/busybox/busybox/busybox-1.24.1-unzip.patch b/meta/recipes-core/busybox/busybox/busybox-1.24.1-unzip.patch
new file mode 100644
index 0000000..7186726
--- /dev/null
+++ b/meta/recipes-core/busybox/busybox/busybox-1.24.1-unzip.patch
@@ -0,0 +1,118 @@
+Upstream-Status: Backport
+
+ http://busybox.net/downloads/fixes-1.24.1/
+ http://git.busybox.net/busybox/commit/?id=1de25a6e87e0e627aa34298105a3d17c60a1f44e
+ http://git.busybox.net/busybox/commit/?h=1_24_stable&id=6767af17f11144c7cd3cfe9ef799d7f89a78fe65
+
+Signed-off-by: Andre McCurdy <armccurdy at gmail.com>
+
+From 1de25a6e87e0e627aa34298105a3d17c60a1f44e Mon Sep 17 00:00:00 2001
+From: Denys Vlasenko <vda.linux at googlemail.com>
+Date: Mon, 26 Oct 2015 19:33:05 +0100
+Subject: [PATCH] unzip: test for bad archive SEGVing
+
+function old new delta
+huft_build 1296 1300 +4
+
+Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
+---
+ archival/libarchive/decompress_gunzip.c | 11 +++++++----
+ testsuite/unzip.tests | 23 ++++++++++++++++++++++-
+ 2 files changed, 29 insertions(+), 5 deletions(-)
+
+diff --git a/archival/libarchive/decompress_gunzip.c b/archival/libarchive/decompress_gunzip.c
+index 7b6f459..30bf451 100644
+--- a/archival/libarchive/decompress_gunzip.c
++++ b/archival/libarchive/decompress_gunzip.c
+@@ -305,11 +305,12 @@ static int huft_build(const unsigned *b, const unsigned n,
+ unsigned i; /* counter, current code */
+ unsigned j; /* counter */
+ int k; /* number of bits in current code */
+- unsigned *p; /* pointer into c[], b[], or v[] */
++ const unsigned *p; /* pointer into c[], b[], or v[] */
+ huft_t *q; /* points to current table */
+ huft_t r; /* table entry for structure assignment */
+ huft_t *u[BMAX]; /* table stack */
+ unsigned v[N_MAX]; /* values in order of bit length */
++ unsigned v_end;
+ int ws[BMAX + 1]; /* bits decoded stack */
+ int w; /* bits decoded */
+ unsigned x[BMAX + 1]; /* bit offsets, then code stack */
+@@ -324,7 +325,7 @@ static int huft_build(const unsigned *b, const unsigned n,
+
+ /* Generate counts for each bit length */
+ memset(c, 0, sizeof(c));
+- p = (unsigned *) b; /* cast allows us to reuse p for pointing to b */
++ p = b;
+ i = n;
+ do {
+ c[*p]++; /* assume all entries <= BMAX */
+@@ -365,12 +366,14 @@ static int huft_build(const unsigned *b, const unsigned n,
+ }
+
+ /* Make a table of values in order of bit lengths */
+- p = (unsigned *) b;
++ p = b;
+ i = 0;
++ v_end = 0;
+ do {
+ j = *p++;
+ if (j != 0) {
+ v[x[j]++] = i;
++ v_end = x[j];
+ }
+ } while (++i < n);
+
+@@ -432,7 +435,7 @@ static int huft_build(const unsigned *b, const unsigned n,
+
+ /* set up table entry in r */
+ r.b = (unsigned char) (k - w);
+- if (p >= v + n) {
++ if (p >= v + v_end) { // Was "if (p >= v + n)" but v[] can be shorter!
+ r.e = 99; /* out of values--invalid code */
+ } else if (*p < s) {
+ r.e = (unsigned char) (*p < 256 ? 16 : 15); /* 256 is EOB code */
+diff --git a/testsuite/unzip.tests b/testsuite/unzip.tests
+index 8677a03..ca0a458 100755
+--- a/testsuite/unzip.tests
++++ b/testsuite/unzip.tests
+@@ -7,7 +7,7 @@
+
+ . ./testing.sh
+
+-# testing "test name" "options" "expected result" "file input" "stdin"
++# testing "test name" "commands" "expected result" "file input" "stdin"
+ # file input will be file called "input"
+ # test can create a file "actual" instead of writing to stdout
+
+@@ -30,6 +30,27 @@ testing "unzip (subdir only)" "unzip -q foo.zip foo/ && test -d foo && test ! -f
+ rmdir foo
+ rm foo.zip
+
++# File containing some damaged encrypted stream
++testing "unzip (bad archive)" "uudecode; unzip bad.zip 2>&1; echo \$?" \
++"Archive: bad.zip
++ inflating: ]3j½r«IK-%Ix
++unzip: inflate error
++1
++" \
++"" "\
++begin-base64 644 bad.zip
++UEsDBBQAAgkIAAAAIQA5AAAANwAAADwAAAAQAAcAXTNqwr1ywqtJGxJLLSVJ
++eCkBD0AdKBk8JzQsIj01JC0/ORJQSwMEFAECCAAAAAAhADoAAAAPAAAANgAA
++AAwAAQASw73Ct1DCokohPXQiNjoUNTUiHRwgLT4WHlBLAQIQABQAAggIAAAA
++oQA5AAAANwAAADwAAAAQQAcADAAAACwAMgCAAAAAAABdM2rCvXLCq0kbEkst
++JUl4KQEPQB0oGSY4Cz4QNgEnJSYIPVBLAQIAABQAAggAAAAAIQAqAAAADwAA
++BDYAAAAMAAEADQAAADIADQAAAEEAAAASw73Ct1DKokohPXQiNzA+FAI1HCcW
++NzITNFBLBQUKAC4JAA04Cw0EOhZQSwUGAQAABAIAAgCZAAAAeQAAAAIALhM=
++====
++"
++
++rm *
++
+ # Clean up scratch directory.
+
+ cd ..
+--
+2.6.2
+
diff --git a/meta/recipes-core/busybox/busybox_1.24.1.bb b/meta/recipes-core/busybox/busybox_1.24.1.bb
index 7d2a7b2..02e8a49 100644
--- a/meta/recipes-core/busybox/busybox_1.24.1.bb
+++ b/meta/recipes-core/busybox/busybox_1.24.1.bb
@@ -32,6 +32,8 @@ SRC_URI = "http://www.busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
file://busybox-cross-menuconfig.patch \
file://0001-Use-CC-when-linking-instead-of-LD-and-use-CFLAGS-and.patch \
file://0002-Passthrough-r-to-linker.patch \
+ file://busybox-1.24.1-unzip.patch \
+ file://busybox-1.24.1-unzip-regression.patch \
file://mount-via-label.cfg \
file://sha1sum.cfg \
file://sha256sum.cfg \
--
1.9.1
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