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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-28 00:26:06 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-04-06 20:38:06 +0200 |
| commit | 5359c1ceda217b1bcb5b8579873a1107f211528f (patch) | |
| tree | 3922b1696a8c4c89bcc87ac8ddb88ccc6ba7aa2a | |
| parent | d909850308eb08f7ade9b1585ef30d997091f740 (diff) | |
| download | ffmpeg-5359c1ceda217b1bcb5b8579873a1107f211528f.tar.gz | |
avcodec/takdsp: Fix integer overflow in decorrelate_sf()
Fixes: signed integer overflow: -101 * 71041254 cannot be represented in type 'int'
Fixes: 45938/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TAK_fuzzer-4687974320701440
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 01d8c887f63bcb1f870034ed441504b3daffc645)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/takdsp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/takdsp.c b/libavcodec/takdsp.c index 9cb8052596..a8f9dba342 100644 --- a/libavcodec/takdsp.c +++ b/libavcodec/takdsp.c @@ -65,7 +65,7 @@ static void decorrelate_sf(int32_t *p1, int32_t *p2, int length, int dshift, int for (i = 0; i < length; i++) { int32_t a = p1[i]; int32_t b = p2[i]; - b = (unsigned)(dfactor * (b >> dshift) + 128 >> 8) << dshift; + b = (unsigned)((int)(dfactor * (unsigned)(b >> dshift) + 128) >> 8) << dshift; p1[i] = b - a; } } |