From 0ce7cf0c86a2744ddfe21cb0983ff572ed07ab69 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 22 May 2017 21:43:01 +0200 Subject: [PATCH] avcodec/takdec: Fix runtime error: left shift of negative value -360 Fixes: 1739/clusterfuzz-testcase-minimized-5399237707694080 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/takdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/takdec.c b/libavcodec/takdec.c index 081b2f203b..78e82a9d41 100644 --- a/libavcodec/takdec.c +++ b/libavcodec/takdec.c @@ -653,7 +653,7 @@ static int decorrelate(TAKDecContext *s, int c1, int c2, int length) s->residues[i ] * s->filter[0]; } - v = (av_clip_intp2(v >> 10, 13) << dshift) - *p1; + v = av_clip_intp2(v >> 10, 13) * (1 << dshift) - *p1; *p1++ = v; }