Message ID | 20240325032908.11939-1-michael@niedermayer.cc |
---|---|
State | New |
Headers | show |
Series | [FFmpeg-devel,1/2] avformat/mov: Check edit list for overflow | expand |
Context | Check | Description |
---|---|---|
yinshiyou/make_loongarch64 | success | Make finished |
yinshiyou/make_fate_loongarch64 | success | Make fate finished |
andriy/make_x86 | success | Make finished |
andriy/make_fate_x86 | success | Make fate finished |
diff --git a/libavformat/mov.c b/libavformat/mov.c index a87ce5cefe..5dbe61a005 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -3683,6 +3683,10 @@ static int get_edit_list_entry(MOVContext *mov, } *edit_list_duration = av_rescale(*edit_list_duration, msc->time_scale, global_timescale); + + if (*edit_list_duration + (uint64_t)*edit_list_media_time > INT64_MAX) + *edit_list_duration = 0; + return 1; }
Fixes: 67492/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-5778297231310848 Fixes: signed integer overflow: 2314885530818453536 + 7782220156096217088 cannot be represented in type 'long' Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavformat/mov.c | 4 ++++ 1 file changed, 4 insertions(+)