Fixes: 764/clusterfuzz-testcase-6273034652483584
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/mpeg12dec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c
index 27db14c35e..e49167f89e 100644
--- a/libavcodec/mpeg12dec.c
+++ b/libavcodec/mpeg12dec.c
@@ -994,7 +994,7 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t
block[12][64])
cbp = get_vlc2(&s->gb, ff_mb_pat_vlc.table, MB_PAT_VLC_BITS, 1);
if (mb_block_count > 6) {
- cbp <<= mb_block_count - 6;
+ cbp *= 1 << mb_block_count - 6;
cbp |= get_bits(&s->gb, mb_block_count - 6);
s->bdsp.clear_blocks(s->block[6]);
}
--
2.11.0
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