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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-18 17:42:21 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-25 14:52:02 +0300 |
| commit | 9dfac9e9e9e45b24e5612a5a1063215eafb78104 (patch) | |
| tree | 7f7dd543c307e01d60297e5e11c9fd278fc62b73 | |
| parent | 2c737a2cb020f231d936cd6b8c1859f0ffdfa6a3 (diff) | |
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 c70f5af849..2289e1bdac 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); |