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authorYue Tao <Yue.Tao@windriver.com>2014-04-27 11:56:19 +0800
committerRichard Purdie <richard.purdie@linuxfoundation.org>2014-05-21 19:50:20 +0100
commit6a134113db439455c649fb8e8043f60dda45377f (patch)
tree0c7e00d2bed39d65f0171321de93fdbb2187f986 /meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13
parente1134f7a27fd6c93ec194426f25eb6508a3ea3e9 (diff)
downloadpoky-6a134113db439455c649fb8e8043f60dda45377f.tar.gz
gst-ffmpeg: fix for Security Advisory CVE-2013-0868
libavcodec/huffyuvdec.c in FFmpeg before 1.1.2 allows remote attackers to have an unspecified impact via crafted Huffyuv data, related to an out-of-bounds write and (1) unchecked return codes from the init_vlc function and (2) len==0 cases. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-0868 (From OE-Core rev: 29dcc2c8e834cf43e415eedefb8fce9667b3aa40) Signed-off-by: Yue Tao <Yue.Tao@windriver.com> Signed-off-by: Roy Li <rongqing.li@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13')
-rw-r--r--meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-huffyuvdec-Check-init_vlc-return-codes.patch87
-rw-r--r--meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-huffyuvdec-Skip-len-0-cases.patch61
2 files changed, 148 insertions, 0 deletions
diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-huffyuvdec-Check-init_vlc-return-codes.patch b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-huffyuvdec-Check-init_vlc-return-codes.patch
new file mode 100644
index 0000000000..e859e443bb
--- /dev/null
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-huffyuvdec-Check-init_vlc-return-codes.patch
@@ -0,0 +1,87 @@
1From b666debffec1fcbb19ef377635a53b9a58bca8a4 Mon Sep 17 00:00:00 2001
2From: Michael Niedermayer <michaelni@gmx.at>
3Date: Tue, 29 Jan 2013 18:29:41 +0100
4Subject: [PATCH] huffyuvdec: Check init_vlc() return codes.
5
6Upstream-Status: Backport
7
8Commit b666debffec1fcbb19ef377635a53b9a58bca8a4 release/1.0
9
10Prevents out of array writes
11
12Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
13Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
14(cherry picked from commit f67a0d115254461649470452058fa3c28c0df294)
15
16Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
17---
18 libavcodec/huffyuv.c | 14 ++++++++++----
19 1 file changed, 10 insertions(+), 4 deletions(-)
20
21diff --git a/libavcodec/huffyuv.c b/libavcodec/huffyuv.c
22index 58da789..993e524 100644
23--- a/gst-libs/ext/libav/libavcodec/huffyuv.c
24+++ b/gst-libs/ext/libav/libavcodec/huffyuv.c
25@@ -33,6 +33,7 @@
26 #include "put_bits.h"
27 #include "dsputil.h"
28 #include "thread.h"
29+#include "libavutil/avassert.h"
30
31 #define VLC_BITS 11
32
33@@ -287,6 +287,7 @@ static void generate_joint_tables(HYuvCo
34 int len1 = s->len[p][u];
35 if (len1 > limit || !len1)
36 continue;
37+ av_assert0(i < (1 << VLC_BITS));
38 len[i] = len0 + len1;
39 bits[i] = (s->bits[0][y] << len1) + s->bits[p][u];
40 symbols[i] = (y<<8) + u;
41@@ -320,6 +321,7 @@ static void generate_joint_tables(HYuvCo
42 int len2 = s->len[2][r&255];
43 if (len2 > limit1 || !len2)
44 continue;
45+ av_assert0(i < (1 << VLC_BITS));
46 len[i] = len0 + len1 + len2;
47 bits[i] = (code << len2) + s->bits[2][r&255];
48 if(s->decorrelate){
49@@ -343,6 +345,7 @@ static void generate_joint_tables(HYuvCo
50 static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length){
51 GetBitContext gb;
52 int i;
53+ int ret;
54
55 init_get_bits(&gb, src, length*8);
56
57@@ -353,7 +356,9 @@ static int read_huffman_tables(HYuvConte
58 return -1;
59 }
60 free_vlc(&s->vlc[i]);
61- init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4, 0);
62+ if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
63+ s->bits[i], 4, 4, 0)) < 0)
64+ return ret;
65 }
66
67 generate_joint_tables(s);
68@@ -365,6 +370,7 @@ static int read_old_huffman_tables(HYuvC
69 #if 1
70 GetBitContext gb;
71 int i;
72+ int ret;
73
74 init_get_bits(&gb, classic_shift_luma, sizeof(classic_shift_luma)*8);
75 if(read_len_table(s->len[0], &gb)<0)
76@@ -385,7 +391,9 @@ static int read_old_huffman_tables(HYuvC
77
78 for(i=0; i<3; i++){
79 free_vlc(&s->vlc[i]);
80- init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4, 0);
81+ if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
82+ s->bits[i], 4, 4, 0)) < 0)
83+ return ret;
84 }
85
86 generate_joint_tables(s);
87--
diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-huffyuvdec-Skip-len-0-cases.patch b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-huffyuvdec-Skip-len-0-cases.patch
new file mode 100644
index 0000000000..94bf4b6fba
--- /dev/null
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-huffyuvdec-Skip-len-0-cases.patch
@@ -0,0 +1,61 @@
1From db0f7f7394e1f994ed38db043f78ed0f10bde0da Mon Sep 17 00:00:00 2001
2From: Michael Niedermayer <michaelni@gmx.at>
3Date: Tue, 29 Jan 2013 19:22:33 +0100
4Subject: [PATCH] huffyuvdec: Skip len==0 cases
5
6Upstream-Status: Backport
7
8Commit db0f7f7394e1f994ed38db043f78ed0f10bde0da release/1.0
9
10Fixes vlc decoding for hypothetical files that would contain such cases.
11
12Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
13(cherry picked from commit 0dfc01c2bbf4b71bb56201bc4a393321e15d1b31)
14
15Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
16---
17 libavcodec/huffyuv.c | 10 +++++-----
18 1 file changed, 5 insertions(+), 5 deletions(-)
19
20diff --git a/libavcodec/huffyuv.c b/libavcodec/huffyuv.c
21index 993e524..72ed351 100644
22--- a/gst-libs/ext/libav/libavcodec/huffyuv.c
23+++ b/gst-libs/ext/libav/libavcodec/huffyuv.c
24@@ -281,11 +281,11 @@ static void generate_joint_tables(HYuvCo
25 for(i=y=0; y<256; y++){
26 int len0 = s->len[0][y];
27 int limit = VLC_BITS - len0;
28- if(limit <= 0)
29+ if(limit <= 0 || !len0)
30 continue;
31 for(u=0; u<256; u++){
32 int len1 = s->len[p][u];
33- if(len1 > limit)
34+ if (len1 > limit || !len1)
35 continue;
36 len[i] = len0 + len1;
37 bits[i] = (s->bits[0][y] << len1) + s->bits[p][u];
38@@ -308,17 +308,17 @@ static void generate_joint_tables(HYuvCo
39 for(i=0, g=-16; g<16; g++){
40 int len0 = s->len[p0][g&255];
41 int limit0 = VLC_BITS - len0;
42- if(limit0 < 2)
43+ if (limit0 < 2 || !len0)
44 continue;
45 for(b=-16; b<16; b++){
46 int len1 = s->len[p1][b&255];
47 int limit1 = limit0 - len1;
48- if(limit1 < 1)
49+ if (limit1 < 1 || !len1)
50 continue;
51 code = (s->bits[p0][g&255] << len1) + s->bits[p1][b&255];
52 for(r=-16; r<16; r++){
53 int len2 = s->len[2][r&255];
54- if(len2 > limit1)
55+ if (len2 > limit1 || !len2)
56 continue;
57 len[i] = len0 + len1 + len2;
58 bits[i] = (code << len2) + s->bits[2][r&255];
59--
601.8.5.2.233.g932f7e4
61