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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-14 20:23:52 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-26 17:21:59 +0200 |
| commit | 991b3deea90c6fc01ec575522760f58c650eba11 (patch) | |
| tree | 7e5891b047e42eaa539238d01b79ea248de8f423 | |
| parent | 5f835efbca874ad42cb954e6788588f52a57a7a2 (diff) | |
avcodec/h274: fix bad left shifts
Fixes: left shift of negative value -3
Fixes: 37788/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-6024714540154880
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/h274.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/h274.c b/libavcodec/h274.c index 262106733c..20401ba06b 100644 --- a/libavcodec/h274.c +++ b/libavcodec/h274.c @@ -250,8 +250,8 @@ int ff_h274_apply_film_grain(AVFrame *out_frame, const AVFrame *in_frame, // Adaptation for 4:2:0 chroma subsampling for (int i = 0; i < h274.num_intensity_intervals[c]; i++) { h274.comp_model_value[c][i][0] >>= 1; - h274.comp_model_value[c][i][1] <<= 1; - h274.comp_model_value[c][i][2] <<= 1; + h274.comp_model_value[c][i][1] *= 2; + h274.comp_model_value[c][i][2] *= 2; } } |