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- Add 0001-avcodec-cbs_jpeg-Check-length-for-SOS.patch

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OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/ffmpeg-4?expand=0&rev=112
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Jan Engelhardt 2020-04-29 12:54:41 +00:00 committed by Git OBS Bridge
parent c88e187dc3
commit 01f1756ec6
3 changed files with 39 additions and 0 deletions
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32
0001-avcodec-cbs_jpeg-Check-length-for-SOS.patch Normal file
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@ -0,0 +1,32 @@
From 1812352d767ccf5431aa440123e2e260a4db2726 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sat, 7 Mar 2020 15:42:58 +0100
Subject: [PATCH] avcodec/cbs_jpeg: Check length for SOS
Fixes: out of array access
Fixes: 19734/clusterfuzz-testcase-minimized-ffmpeg_BSF_TRACE_HEADERS_fuzzer-5673507031875584
Fixes: 19353/clusterfuzz-testcase-minimized-ffmpeg_BSF_TRACE_HEADERS_fuzzer-5703944462663680
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/cbs_jpeg.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/cbs_jpeg.c b/libavcodec/cbs_jpeg.c
index 6bbce5f89b..89512a26bb 100644
--- a/libavcodec/cbs_jpeg.c
+++ b/libavcodec/cbs_jpeg.c
@@ -197,6 +197,9 @@ static int cbs_jpeg_split_fragment(CodedBitstreamContext *ctx,
if (marker == JPEG_MARKER_SOS) {
length = AV_RB16(frag->data + start);
+ if (length > end - start)
+ return AVERROR_INVALIDDATA;
+
data_ref = NULL;
data = av_malloc(end - start +
AV_INPUT_BUFFER_PADDING_SIZE);
--
2.26.2

6
ffmpeg-4.changes
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@ -1,3 +1,9 @@
-------------------------------------------------------------------
Wed Apr 29 12:16:11 UTC 2020 - Jan Engelhardt <jengelh@inai.de>
- Add 0001-avcodec-cbs_jpeg-Check-length-for-SOS.patch
[boo#1170767]
-------------------------------------------------------------------
Fri Mar 31 00:41:22 UTC 2020 - Ismail Dönmez <idonmez@suse.com>

1
ffmpeg-4.spec
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@ -118,6 +118,7 @@ Patch6: ffmpeg-4.2-dlopen-fdk_aac.patch
Patch7: ffmpeg4_swscale_replace_illegal_vector_keyword.patch
Patch8: ffmpeg4_swscale_fix_altivec_vsx_recent_gcc.patch
Patch9: 929e5159bc13da374b83f5627879c607acce180b.patch
Patch10: 0001-avcodec-cbs_jpeg-Check-length-for-SOS.patch
BuildRequires: ladspa-devel
BuildRequires: libgsm-devel
BuildRequires: libmp3lame-devel