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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-04 23:52:52 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-09 11:42:16 +0200 |
| commit | 98aec8c1b864e44636c0fabdaff3494d2051fda3 (patch) | |
| tree | 50c032a4106ad5058f92f3c2686b522f2d575bf7 /libavcodec/h274.c | |
| parent | 849138f476f4b08656681bfc3aec5beac47777fb (diff) | |
| download | ffmpeg-98aec8c1b864e44636c0fabdaff3494d2051fda3.tar.gz | |
avcodec/h274: Fix signed left shift
Fixes: 39463/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-5736517629247488
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/h274.c')
| -rw-r--r-- | libavcodec/h274.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/h274.c b/libavcodec/h274.c index 20401ba06b..a69f941142 100644 --- a/libavcodec/h274.c +++ b/libavcodec/h274.c @@ -145,8 +145,8 @@ static void deblock_8x8_c(int8_t *out, const int out_stride) for (int y = 0; y < 8; y++) { const int8_t l1 = out[-2], l0 = out[-1]; const int8_t r0 = out[0], r1 = out[1]; - out[0] = (l0 + (r0 << 1) + r1) >> 2; - out[-1] = (r0 + (l0 << 1) + l1) >> 2; + out[0] = (l0 + r0 * 2 + r1) >> 2; + out[-1] = (r0 + l0 * 2 + l1) >> 2; out += out_stride; } } |