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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-23 23:34:15 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-01-13 22:51:18 +0100 |
| commit | 3541d4960b58eb8e2e762e6c8e0629a52c053e5d (patch) | |
| tree | b4510194b0ae4556ff8acc6f8fead381e347eb8b | |
| parent | dc78fd9404c8aae189117c12c65cbd083c217d95 (diff) | |
| download | ffmpeg-3541d4960b58eb8e2e762e6c8e0629a52c053e5d.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; |