Fixes: left shift of negative value -5 Fixes: 15294/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VC1_fuzzer-5733921754447872
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/vc1_block.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/vc1_block.c b/libavcodec/vc1_block.c index ec5339d2f0..7e41791832 100644 --- a/libavcodec/vc1_block.c +++ b/libavcodec/vc1_block.c @@ -1376,7 +1376,7 @@ static int vc1_decode_p_mb(VC1Context *v) v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]); if (v->rangeredfrm) for (j = 0; j < 64; j++) - v->block[v->cur_blk_idx][block_map[i]][j] <<= 1; + v->block[v->cur_blk_idx][block_map[i]][j] *= 2; block_cbp |= 0xF << (i << 2); block_intra |= 1 << i; } else if (val) { -- 2.22.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
