ffmpeg | branch: master | Michael Niedermayer <michael@niedermayer.cc> | Sat Jan 16 22:05:53 2021 +0100| [29851cb840c176d514573914799ca6c95f3f4e8e] | committer: Michael Niedermayer avformat/utils: Check dts in update_initial_timestamps() more Fixes: signed integer overflow: -9223372036853488158 - 90000000 cannot be represented in type 'long long' Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_MPSUB_fuzzer-6696625298866176 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=29851cb840c176d514...

libavformat/utils.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavformat/utils.c b/libavformat/utils.c index 6f100294a1..1ec71691e5 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -1106,6 +1106,7 @@ static void update_initial_timestamps(AVFormatContext *s, int stream_index, dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || st->cur_dts < INT_MIN + RELATIVE_TS_BASE || + dts < INT_MIN + (st->cur_dts - RELATIVE_TS_BASE) || is_relative(dts)) return;