ffmpeg/FFmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-09-20 13:26:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

avformat/mov: Check dts for overflow in mov_read_trun()

Browse Source 
Fixes: signed integer overflow: 9223372034248226491 + 3275247799 cannot be represented in type 'long'
Fixes: clusterfuzz-testcase-minimized-audio_decoder_fuzzer-4538729166077952

Reported-by: Matt Wolenetz <wolenetz@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-08-26 13:37:27 +02:00
parent 06ce821bc7
commit 4de4bc06fd
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/mov.c
View File

@ -4953,6 +4953,8 @@ static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
"size %u, distance %d, keyframe %d\n", st->index,
index_entry_pos, offset, dts, sample_size, distance, keyframe);
distance++;
if (av_sat_add64(dts, sample_duration) != dts + (uint64_t)sample_duration)
return AVERROR_INVALIDDATA;
dts += sample_duration;
offset += sample_size;
sc->data_size += sample_size;