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

OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/ffmpeg-4?expand=0&rev=112

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

@@ -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
+

ffmpeg-4.changes

@@ -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>
 

ffmpeg-4.spec

@@ -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