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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-14 22:02:50 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-23 14:32:54 +0100 |
| commit | 7a6666b19de1ee01a8d2f10224a8344e7bc1c074 (patch) | |
| tree | fbdc75467f1e1ade16051ec61264bbfaeb27adb0 /libavformat | |
| parent | d82ee907d6caafbc1212c4b63ecac2dcd30f23b0 (diff) | |
| download | ffmpeg-7a6666b19de1ee01a8d2f10224a8344e7bc1c074.tar.gz | |
avformat/flvdec: Use av_sat_add64() for pts computation
Fixes: signed integer overflow: -9223372036854767583 + -65536 cannot be represented in type 'long'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_FLV_fuzzer-6734549467922432
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')
| -rw-r--r-- | libavformat/flvdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index ad6e7a3ca5..07ef342278 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -1231,7 +1231,7 @@ retry_duration: if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_MPEG4) { // sign extension int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000; - pts = dts + cts; + pts = av_sat_add64(dts, cts); if (cts < 0) { // dts might be wrong if (!flv->wrong_dts) av_log(s, AV_LOG_WARNING, |