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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-19 23:27:21 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:11:55 +0200 |
| commit | 9dd910ad2a7d3f9d38b34fe25997c2aca3fe1b64 (patch) | |
| tree | d1c18125bcb5ddbc0bec289757606f1f68969c93 | |
| parent | b5c293030a44f20e933aa0c75af812f4af761b46 (diff) | |
| download | ffmpeg-9dd910ad2a7d3f9d38b34fe25997c2aca3fe1b64.tar.gz | |
avcodec/alsdec: Fix integer overflow with shifting samples
Fixes: signed integer overflow: -346039050 * 8 cannot be represented in type 'int'
Fixes: 15283/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-5692700268953600
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 a3bd4b260eb9f0d5817f9b3d672844f127c51a0b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/alsdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index d1141f67a9..04220d6ec4 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -1039,7 +1039,7 @@ static int decode_block(ALSDecContext *ctx, ALSBlockData *bd) if (*bd->shift_lsbs) for (smp = 0; smp < bd->block_length; smp++) - bd->raw_samples[smp] <<= *bd->shift_lsbs; + bd->raw_samples[smp] = (unsigned)bd->raw_samples[smp] << *bd->shift_lsbs; return 0; } |