From 439fbb9c8b2a90e97c44c7c57245e01ca84c865d Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 15 Dec 2017 13:06:30 +0100 Subject: avcodec/hevcdsp_template: Fix undefined shift in put_hevc_qpel_bi_w_hv() Fixes: runtime error: left shift of negative value -3 Fixes: 4524/clusterfuzz-testcase-minimized-6055590120914944 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/hevcdsp_template.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavcodec') diff --git a/libavcodec/hevcdsp_template.c b/libavcodec/hevcdsp_template.c index 0623cfad89..4017af8eb0 100644 --- a/libavcodec/hevcdsp_template.c +++ b/libavcodec/hevcdsp_template.c @@ -1051,7 +1051,7 @@ static void FUNC(put_hevc_qpel_bi_w_hv)(uint8_t *_dst, ptrdiff_t _dststride, uin for (y = 0; y < height; y++) { for (x = 0; x < width; x++) dst[x] = av_clip_pixel(((QPEL_FILTER(tmp, MAX_PB_SIZE) >> 6) * wx1 + src2[x] * wx0 + - ((ox0 + ox1 + 1) << log2Wd)) >> (log2Wd + 1)); + ((ox0 + ox1 + 1) * (1 << log2Wd))) >> (log2Wd + 1)); tmp += MAX_PB_SIZE; dst += dststride; src2 += MAX_PB_SIZE; -- cgit v1.2.3