RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-01-19 22:01:00 +00:00
Code Issues Projects Releases Wiki Activity

avformat/sbgdec: Check for overflow in parse_timestamp()

Browse Source 
Fixes: signed integer overflow: 33986707200000000 + 9195561788997000192 cannot be represented in type 'long'
Fixes: 23790/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-6554232198266880

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-07-19 16:20:52 +02:00
parent 80286671c5
commit b6663adaae
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavformat/sbgdec.c
View File

@ -474,6 +474,8 @@ static int parse_timestamp(struct sbg_parser *p,
while (lex_char(p, '+')) {
if (!lex_time(p, &dt))
return AVERROR_INVALIDDATA;
if (av_sat_add64(rel, dt) - dt != rel)
return AVERROR_INVALIDDATA;
rel += dt;
r = 1;
}