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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-23 23:34:15 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-04-09 22:19:40 +0200 |
| commit | e546e9c5b45ee139993a7bcf1963f90a5aa43205 (patch) | |
| tree | 0b00ed140237d0da7947801c5052f0df1ed40c25 | |
| parent | 0e6f3166ce39e02e7c533854353a394f3824d362 (diff) | |
| download | ffmpeg-e546e9c5b45ee139993a7bcf1963f90a5aa43205.tar.gz | |
avcodec/alacdsp: fix integer overflow in decorrelate_stereo()
Fixes: signed integer overflow: -16777216 * 131 cannot be represented in type 'int'
Fixes: 23835/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-5669943160078336
Fixes: 41101/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-4636330705944576
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 68457c1e85122ffcadb0c909070dd210095fd2cd)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/alacdsp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/alacdsp.c b/libavcodec/alacdsp.c index 9996eb4319..8718d1b6b1 100644 --- a/libavcodec/alacdsp.c +++ b/libavcodec/alacdsp.c @@ -34,7 +34,7 @@ static void decorrelate_stereo(int32_t *buffer[2], int nb_samples, a = buffer[0][i]; b = buffer[1][i]; - a -= (b * decorr_left_weight) >> decorr_shift; + a -= (int)(b * (unsigned)decorr_left_weight) >> decorr_shift; b += a; buffer[0][i] = b; |