diff options
| author | Michael Niedermayer <[email protected]> | 2021-01-14 21:29:01 +0100 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2021-09-10 16:04:26 +0200 |
| commit | a5d1613f48cb55e2fa0e21f72f08d74513d25065 (patch) | |
| tree | fa2b2714d076263dc2843eccbdea940fb87300ca | |
| parent | 657efee3d42f490ade58704aa4e39b71cabcf909 (diff) | |
avformat/utils: Check dts - (1<<pts_wrap_bits) overflow
Fixes: signed integer overflow: -9223372036842389247 - 2147483648 cannot be represented in type 'long long'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_FLV_fuzzer-4845007531671552
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
(cherry picked from commit d82ee907d6caafbc1212c4b63ecac2dcd30f23b0)
Signed-off-by: Michael Niedermayer <[email protected]>
| -rw-r--r-- | libavformat/utils.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/utils.c b/libavformat/utils.c index e26ad5d94f..bcf1cf1df7 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -1291,7 +1291,7 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st, presentation_delayed = 1; if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && - st->pts_wrap_bits < 63 && + st->pts_wrap_bits < 63 && pkt->dts > INT64_MIN + (1LL << (st->pts_wrap_bits - 1)) && pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) { if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) { pkt->dts -= 1LL << st->pts_wrap_bits; |