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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-14 21:29:01 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-23 14:32:54 +0100 |
| commit | d82ee907d6caafbc1212c4b63ecac2dcd30f23b0 (patch) | |
| tree | 7f5db14109f0b39507144129014201ee0d021069 /libavformat/utils.c | |
| parent | 638a151a877c27a46c15643db26c9ba726feecde (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 <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/utils.c')
| -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 f534b6e5b5..6f100294a1 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -1254,7 +1254,7 @@ 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; |