From 7592d97f10134422d4509ab1287796af70e003ba Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Wed, 5 Jul 2017 00:05:11 +0200
Subject: [PATCH] avcodec/h264_slice: Fix signed integer overflow
Fixes: runtime error: signed integer overflow: 26 + 2147483644 cannot be represented in type 'int'
Fixes: 2456/clusterfuzz-testcase-minimized-4822695051001856
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/h264_slice.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c
index faa684c9382..6deb08fe6d0 100644
--- a/libavcodec/h264_slice.c
+++ b/libavcodec/h264_slice.c
@@ -1825,7 +1825,7 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
}
sl->last_qscale_diff = 0;
- tmp = pps->init_qp + get_se_golomb(&sl->gb);
+ tmp = pps->init_qp + (unsigned)get_se_golomb(&sl->gb);
if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
return AVERROR_INVALIDDATA;
--
GitLab