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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-06-09 22:21:55 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-10-09 22:15:40 +0200 |
| commit | 8a4e3bc1c5c62df3434573adfd254cc68c826f7e (patch) | |
| tree | 659f93072fde56f9edfdfb6ef028daef491197ba | |
| parent | f9afd5caccc33e8c82c12346b7b5e08db2192fee (diff) | |
| download | ffmpeg-8a4e3bc1c5c62df3434573adfd254cc68c826f7e.tar.gz | |
avcodec/hevcdsp_template: stay within tables in sao_band_filter()
Fixes: out of array read
Fixes: 47875/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5719393113341952
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 9c5250a5612d4b32d79108de0c03945b2017963e)
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 56cd9e605d..61425975cd 100644 --- a/libavcodec/hevcdsp_template.c +++ b/libavcodec/hevcdsp_template.c @@ -313,7 +313,7 @@ static void FUNC(sao_band_filter)(uint8_t *_dst, uint8_t *_src, offset_table[(k + sao_left_class) & 31] = sao_offset_val[k + 1]; for (y = 0; y < height; y++) { for (x = 0; x < width; x++) - dst[x] = av_clip_pixel(src[x] + offset_table[src[x] >> shift]); + dst[x] = av_clip_pixel(src[x] + offset_table[(src[x] >> shift) & 31]); dst += stride_dst; src += stride_src; } |