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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-04-04 00:42:20 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-04-04 19:38:30 +0200 |
| commit | bf3b74142e4402912e26b5e58a0b63f87ec3cd21 (patch) | |
| tree | b050ca02202ebf766068828571442b456702b36f | |
| parent | ed49391961999f028e0bc55767d0eef6eeb15e49 (diff) | |
avformat/pcm: Use 64bit in bitrate computation
Fixes: signed integer overflow: 65792 * 65312 cannot be represented in type 'int'
Fixes: 67819/clusterfuzz-testcase-minimized-ffmpeg_dem_WADY_fuzzer-5236100912185344
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/pcm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/pcm.c b/libavformat/pcm.c index 051e86dd46..a774dbc372 100644 --- a/libavformat/pcm.c +++ b/libavformat/pcm.c @@ -41,7 +41,7 @@ int ff_pcm_default_packet_size(AVCodecParameters *par) /* Don't trust the codecpar bitrate if we can calculate it ourselves */ if (bits_per_sample > 0 && par->sample_rate > 0 && par->ch_layout.nb_channels > 0) if ((int64_t)par->sample_rate * par->ch_layout.nb_channels < INT64_MAX / bits_per_sample) - bitrate = bits_per_sample * par->sample_rate * par->ch_layout.nb_channels; + bitrate = bits_per_sample * (int64_t)par->sample_rate * par->ch_layout.nb_channels; if (bitrate > 0) { nb_samples = av_clip64(bitrate / 8 / PCM_DEMUX_TARGET_FPS / par->block_align, 1, max_samples); |