From d7b3d5c3f2e2ff1994762b5e09c05fbc33790b5b Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 20 Jun 2017 14:38:34 +0200 Subject: [PATCH] avcodec/hevc_filter: Fix invalid shift Fixes: runtime error: left shift of negative value -1 Fixes: 2299/clusterfuzz-testcase-minimized-4843509351710720 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/hevc_filter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/hevc_filter.c b/libavcodec/hevc_filter.c index 14e7c8dd50..b53f4cc721 100644 --- a/libavcodec/hevc_filter.c +++ b/libavcodec/hevc_filter.c @@ -470,7 +470,7 @@ static int get_pcm(HEVCContext *s, int x, int y) #define TC_CALC(qp, bs) \ tctable[av_clip((qp) + DEFAULT_INTRA_TC_OFFSET * ((bs) - 1) + \ - (tc_offset >> 1 << 1), \ + (tc_offset & -2), \ 0, MAX_QP + DEFAULT_INTRA_TC_OFFSET)] static void deblocking_filter_CTB(HEVCContext *s, int x0, int y0)