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authorMichael Niedermayer <michael@niedermayer.cc>2021-10-31 01:11:23 +0300
committerMichael Niedermayer <michael@niedermayer.cc>2021-11-01 22:37:20 +0300
commit905588df975071c03c00b2e923c311b4de65a8f4 (patch)
tree8415e0d5ee6f2c9b13d25fdc16290c1438773ff2 /libavformat/aiffdec.c
parent93f7776921ed8c5219732210067016c3457e864d (diff)
avformat/aiffdec: Use av_rescale() for bitrate
Fixes: integer overflow Fixes: 40313/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-4814761406103552 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/aiffdec.c')
-rw-r--r--libavformat/aiffdec.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c
index 648f231a52..7a995c00a6 100644
--- a/libavformat/aiffdec.c
+++ b/libavformat/aiffdec.c
@@ -185,8 +185,10 @@ static int get_aiff_header(AVFormatContext *s, int size,
par->block_align = (av_get_bits_per_sample(par->codec_id) * par->channels) >> 3;
if (aiff->block_duration) {
- par->bit_rate = (int64_t)par->sample_rate * (par->block_align << 3) /
- aiff->block_duration;
+ par->bit_rate = av_rescale(par->sample_rate, par->block_align * 8LL,
+ aiff->block_duration);
+ if (par->bit_rate < 0)
+ par->bit_rate = 0;
}
/* Chunk is over */