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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-01-18 19:55:23 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:49:26 +0200 |
| commit | 1a54ee4a51220d87d7b2ed92a682883cd2bb2b51 (patch) | |
| tree | 2b056e33f085951fb51015cd13c0ef857884711e /libavcodec | |
| parent | 44da920eb70a5a56c5ad9a0becd33b97cf1e856c (diff) | |
| download | ffmpeg-1a54ee4a51220d87d7b2ed92a682883cd2bb2b51.tar.gz | |
avcodec/wmalosslessdec: Fix integer overflow with sliding in padding bits
Fixes: signed integer overflow: -53716100 * 256 cannot be represented in type 'int'
Fixes: 20143/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5716604000403456
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 b8a0be93528187721a2414f66abbc252a258afa3)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/wmalosslessdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c index ea5a333860..263be2065e 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -996,7 +996,7 @@ static int decode_subframe(WmallDecodeCtx *s) if (s->bits_per_sample == 16) { *s->samples_16[c]++ = (int16_t) s->channel_residues[c][j] * (1 << padding_zeroes); } else { - *s->samples_32[c]++ = s->channel_residues[c][j] * (256 << padding_zeroes); + *s->samples_32[c]++ = s->channel_residues[c][j] * (256U << padding_zeroes); } } } |