[FFmpeg-cvslog] avcodec/scpr: Fix use of uninitialized variable
Michael Niedermayer
git at videolan.org
Thu Mar 28 18:34:44 EET 2019
ffmpeg | branch: release/3.4 | Michael Niedermayer <michael at niedermayer.cc> | Thu Feb 28 00:12:14 2019 +0100| [66894351909ffca0bd55b4e349362741f25a0f08] | committer: Michael Niedermayer
avcodec/scpr: Fix use of uninitialized variable
Fixes: Undefined shift
Fixes: 12911/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5677102915911680
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 53248acfb3b23007c89ae822d7bcae451272d5a7)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=66894351909ffca0bd55b4e349362741f25a0f08
---
libavcodec/scpr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/scpr.c b/libavcodec/scpr.c
index 66b4157576..6d9c437c0b 100644
--- a/libavcodec/scpr.c
+++ b/libavcodec/scpr.c
@@ -504,7 +504,7 @@ static int decompress_p(AVCodecContext *avctx,
{
SCPRContext *s = avctx->priv_data;
GetByteContext *gb = &s->gb;
- int ret, temp, min, max, x, y, cx = 0, cx1 = 0;
+ int ret, temp = 0, min, max, x, y, cx = 0, cx1 = 0;
int backstep = linesize - avctx->width;
const int cxshift = s->cxshift;
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