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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 18:28:51 +0200 |
| commit | aa8eb1bed075931b0ce0a8bc9a8ff5882830044c (patch) | |
| tree | d03aba9c28dd7c09d8200cc7cf7a2bde9f0917d7 | |
| parent | 5f529e9147a5c5c8ecf8d5ef0dd569194ce30eed (diff) | |
| download | ffmpeg-aa8eb1bed075931b0ce0a8bc9a8ff5882830044c.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>
| -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 f98096dca9..d296500bec 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->ch_layout.nb_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); |