xenia-project/FFmpeg
1
0
Fork 0
mirror of https://github.com/xenia-project/FFmpeg.git synced 2024-11-30 15:00:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

avformat/iff: Check size before skip

Browse Source 
Fixes: Infinite loop
Fixes: 27292/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-5731168991051776

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-11-14 20:59:01 +01:00
parent ebf4bc629e
commit 8b50e8bc29
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
libavformat/iff.c
View File

@ -259,6 +259,9 @@ static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
uint64_t size = avio_rb64(pb);
uint64_t orig_pos = avio_tell(pb);
if (size >= INT64_MAX)
return AVERROR_INVALIDDATA;
switch(tag) {
case MKTAG('A','B','S','S'):
if (size < 8)