Stowage/ffmpeg
2
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2026-02-08 10:50:02 +00:00
Code Issues Projects Releases Packages Wiki Activity

avformat/flvdec: Check array entry number

Browse source 
Fixes: signed integer overflow: -2147483648 - 1 cannot be represented in type 'int'
Fixes: 30209/clusterfuzz-testcase-minimized-ffmpeg_dem_FLV_fuzzer-5724831658147840

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b5d8fe1c87)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-02-11 22:58:53 +01:00
parent 3ca8acfe2d
commit fc191eeafe
1 changed files with 2 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
libavformat/flvdec.c
View file

@ -718,6 +718,8 @@ static int amf_skip_tag(AVIOContext *pb, AMFDataType type, int depth)
parse_name = 0;
case AMF_DATA_TYPE_MIXEDARRAY:
nb = avio_rb32(pb);
if (nb < 0)
return AVERROR_INVALIDDATA;
case AMF_DATA_TYPE_OBJECT:
while(!pb->eof_reached && (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY)) {
if (parse_name) {