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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 17:29:23 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-11 21:23:49 +0200 |
| commit | 5c9eaff60c12628c697f178e9b2474980d276e84 (patch) | |
| tree | 1cdd07bad78bf94b6e19f0f7d4fe16cc247f0dc5 /libavformat | |
| parent | 5ca2ee38e805b9242360020241ed8f01be89c05b (diff) | |
| download | ffmpeg-5c9eaff60c12628c697f178e9b2474980d276e84.tar.gz | |
avformat/utils: Extend overflow check in dts wrap in compute_pkt_fields()
Fixes: signed integer overflow: -9223372032574480351 - 4294967296 cannot be represented in type 'long long'
Fixes: 30022/clusterfuzz-testcase-minimized-ffmpeg_dem_KUX_fuzzer-5568610275819520
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 b37ff29e0e093b15585e9fb44bbd82bdf14b5230)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat')
| -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 92cdd3cc11..2351be972d 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -1250,7 +1250,7 @@ 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 && pkt->dts > INT64_MIN + (1LL << (st->pts_wrap_bits - 1)) && + st->pts_wrap_bits < 63 && pkt->dts > INT64_MIN + (1LL << st->pts_wrap_bits) && 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; |