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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-04-28 23:34:53 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-01 00:41:28 +0200 |
| commit | b03a42587f1e4daa1b58f8e12682e248813956de (patch) | |
| tree | c6e75179aedf1b8c0622da1bc393630d1c62b245 | |
| parent | 9764ec67b25b14c9a44f89e220a820949f637ece (diff) | |
| download | ffmpeg-b03a42587f1e4daa1b58f8e12682e248813956de.tar.gz | |
avcodec/alacdsp: Make intermediates unsigned
Fixes: signed integer overflow: -14914387 + -2147418648 cannot be represented in type 'int'
Fixes: 46464/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-474307197311385
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 8709f4c10a216cb3e11564bc392841e832f8e3b1)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/alacdsp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/alacdsp.c b/libavcodec/alacdsp.c index 8718d1b6b1..b3c1c424f3 100644 --- a/libavcodec/alacdsp.c +++ b/libavcodec/alacdsp.c @@ -29,12 +29,12 @@ static void decorrelate_stereo(int32_t *buffer[2], int nb_samples, int i; for (i = 0; i < nb_samples; i++) { - int32_t a, b; + uint32_t a, b; a = buffer[0][i]; b = buffer[1][i]; - a -= (int)(b * (unsigned)decorr_left_weight) >> decorr_shift; + a -= (int)(b * decorr_left_weight) >> decorr_shift; b += a; buffer[0][i] = b; |