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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-29 22:45:07 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-31 18:43:50 +0100 |
| commit | 53efab44a9d0971c6c12d9b3d1af855ca863c847 (patch) | |
| tree | 1f597f6968cc7aeceb21887ebb5b0072ab96f2d6 /libavcodec/wmalosslessdec.c | |
| parent | aea67556116330d3151e4cd3ef1e266b5d90f388 (diff) | |
| download | ffmpeg-53efab44a9d0971c6c12d9b3d1af855ca863c847.tar.gz | |
avcodec/wmalosslessdec: Fixes undefined overflow in dequantization in decode_subframe()
Fixes: signed integer overflow: 47875596 * 45 cannot be represented in type 'int'
Fixes: 19082/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5687766512041984
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/wmalosslessdec.c')
| -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 d4dd0ed4e3..d2f9d4a70f 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -979,7 +979,7 @@ static int decode_subframe(WmallDecodeCtx *s) if (s->quant_stepsize != 1) for (i = 0; i < s->num_channels; i++) for (j = 0; j < subframe_len; j++) - s->channel_residues[i][j] *= s->quant_stepsize; + s->channel_residues[i][j] *= (unsigned)s->quant_stepsize; } /* Write to proper output buffer depending on bit-depth */ |