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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-24 21:59:04 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-10 13:08:24 +0200 |
| commit | 4f54f530039db149808478796e8389c14eb73095 (patch) | |
| tree | 650dfb3b961dabce655d8c7b3812e41cfe392285 | |
| parent | 2ad9c95c26d31e5d4e5365f672e4e44f2b559e93 (diff) | |
| download | ffmpeg-4f54f530039db149808478796e8389c14eb73095.tar.gz | |
avcodec/takdsp: Fix negative shift in decorrelate_sf()
Fixes: left shift of negative value -4
Fixes: 25723/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TAK_fuzzer-6250580752990208
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
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 2441c2baa6..9cb8052596 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 = dfactor * (b >> dshift) + 128 >> 8 << dshift; + b = (unsigned)(dfactor * (b >> dshift) + 128 >> 8) << dshift; p1[i] = b - a; } } |