diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-24 22:59:04 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 16:18:20 +0300 |
| commit | 3dffbfac2c8714bb6deb9fc6c8646af81c6c8bce (patch) | |
| tree | 5bcf598259a0f63119e27b710c02ece1bdbcc681 /libavcodec | |
| parent | 106103d7b50cb119d03611203e11cf5acc1edab0 (diff) | |
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>
(cherry picked from commit 4f54f530039db149808478796e8389c14eb73095)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -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; } } |