From d24043e1a2f93f206a2ad59054f24f45ff023e5c Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 11 Jun 2017 20:28:46 +0200 Subject: avcodec/jpeg2000dwt: Fix runtime error: left shift of negative value -123 Fixes: 2208/clusterfuzz-testcase-minimized-5976593765761024 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/jpeg2000dwt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavcodec') diff --git a/libavcodec/jpeg2000dwt.c b/libavcodec/jpeg2000dwt.c index 188cc261a4..735ed0b1dc 100644 --- a/libavcodec/jpeg2000dwt.c +++ b/libavcodec/jpeg2000dwt.c @@ -488,7 +488,7 @@ static void dwt_decode97_int(DWTContext *s, int32_t *t) line += 5; for (i = 0; i < w * h; i++) - data[i] <<= I_PRESHIFT; + data[i] *= 1 << I_PRESHIFT; for (lev = 0; lev < s->ndeclevels; lev++) { int lh = s->linelen[lev][0], -- cgit v1.2.3