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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-18 16:42:21 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-24 22:56:03 +0200 |
| commit | 136189522975e252d303cf9fb9e86bb19a5fe709 (patch) | |
| tree | 501df5f9e920b8157d2e3963b7f6a8fc90881fef | |
| parent | 82bd617683452a4a2e3eb7126efb495198036b1c (diff) | |
| download | ffmpeg-136189522975e252d303cf9fb9e86bb19a5fe709.tar.gz | |
avformat/sdsdec: Use av_rescale() to avoid intermediate overflow in duration calculation
Fixes: signed integer overflow: 72128794995445727 * 240 cannot be represented in type 'long'
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_SDS_fuzzer-6628185583779840
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 aa8eb1bed075931b0ce0a8bc9a8ff5882830044c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/sdsdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/sdsdec.c b/libavformat/sdsdec.c index 081bb4ca2d..bc8b08446a 100644 --- a/libavformat/sdsdec.c +++ b/libavformat/sdsdec.c @@ -112,7 +112,7 @@ static int sds_read_header(AVFormatContext *ctx) st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; st->codecpar->channels = 1; st->codecpar->sample_rate = sample_period ? 1000000000 / sample_period : 16000; - st->duration = (avio_size(pb) - 21) / (127) * s->size / 4; + st->duration = av_rescale((avio_size(pb) - 21) / 127, s->size, 4); avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); |