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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-14 21:29:01 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 14:18:21 +0100 |
| commit | 9f0b673194c05265d1993d4e96c1a97b672bf731 (patch) | |
| tree | faa44d12d1fa66373f92256bbe4b4b90e7c6addc | |
| parent | dda0826ab654c3386a283f137eb1981ccc7e03f9 (diff) | |
| download | ffmpeg-9f0b673194c05265d1993d4e96c1a97b672bf731.tar.gz | |
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>
(cherry picked from commit d82ee907d6caafbc1212c4b63ecac2dcd30f23b0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -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 b8da0e8e9b..1b229095f2 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -1286,7 +1286,7 @@ 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; |