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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-12-15 13:06:30 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-28 15:31:13 +0100 |
| commit | d147e2d55d2947742ec1d42a8b107f7131fdc383 (patch) | |
| tree | 2938ac36fdd162a9ddf428c8203f6b74c0a40e7d | |
| parent | d6a13f031ced11ef291768a76c90d76e1b586526 (diff) | |
| download | ffmpeg-d147e2d55d2947742ec1d42a8b107f7131fdc383.tar.gz | |
avcodec/hevcdsp_template: Fix undefined shift in put_hevc_qpel_bi_w_hv()
Fixes: runtime error: left shift of negative value -3
Fixes: 4524/clusterfuzz-testcase-minimized-6055590120914944
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 439fbb9c8b2a90e97c44c7c57245e01ca84c865d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/hevcdsp_template.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/hevcdsp_template.c b/libavcodec/hevcdsp_template.c index 0623cfad89..4017af8eb0 100644 --- a/libavcodec/hevcdsp_template.c +++ b/libavcodec/hevcdsp_template.c @@ -1051,7 +1051,7 @@ static void FUNC(put_hevc_qpel_bi_w_hv)(uint8_t *_dst, ptrdiff_t _dststride, uin for (y = 0; y < height; y++) { for (x = 0; x < width; x++) dst[x] = av_clip_pixel(((QPEL_FILTER(tmp, MAX_PB_SIZE) >> 6) * wx1 + src2[x] * wx0 + - ((ox0 + ox1 + 1) << log2Wd)) >> (log2Wd + 1)); + ((ox0 + ox1 + 1) * (1 << log2Wd))) >> (log2Wd + 1)); tmp += MAX_PB_SIZE; dst += dststride; src2 += MAX_PB_SIZE; |