From 0c42d0add37c8a41bc75179efe0571305d9165d1 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 21 Feb 2017 16:22:47 +0100 Subject: [PATCH] avcodec/bmp: Fix runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself There is code checking height and width later, leaving an invalid value invalid is thus fine. Fixes: 635/clusterfuzz-testcase-6225161437052928 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/bmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/bmp.c b/libavcodec/bmp.c index fa1d6a53f2..d462385ca8 100644 --- a/libavcodec/bmp.c +++ b/libavcodec/bmp.c @@ -133,7 +133,7 @@ static int bmp_decode_frame(AVCodecContext *avctx, } avctx->width = width; - avctx->height = height > 0 ? height : -height; + avctx->height = height > 0 ? height : -(unsigned)height; avctx->pix_fmt = AV_PIX_FMT_NONE;