[FFmpeg-cvslog] avcodec/sunrast: Fix input buffer pointer check
Michael Niedermayer
git at videolan.org
Mon Dec 5 19:46:47 EET 2016
ffmpeg | branch: release/3.1 | Michael Niedermayer <michael at niedermayer.cc> | Tue Nov 1 19:24:49 2016 +0100| [eaf2f750c35677f16097ceb45a69a6051ac72853] | committer: Michael Niedermayer
avcodec/sunrast: Fix input buffer pointer check
Fixes: out of array read
Fixes: poc.dat
Found-by: Bingchang, Liu @VARAS of IIE
Tested-by: bc L <l.bing.chang.bc at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 37138338ff602803d174b13fecd363a083bc2f9a)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=eaf2f750c35677f16097ceb45a69a6051ac72853
---
libavcodec/sunrast.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/sunrast.c b/libavcodec/sunrast.c
index 25e11f6..0af5626 100644
--- a/libavcodec/sunrast.c
+++ b/libavcodec/sunrast.c
@@ -168,7 +168,7 @@ static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
}
} else {
for (y = 0; y < h; y++) {
- if (buf_end - buf < len)
+ if (buf_end - buf < alen)
break;
memcpy(ptr, buf, len);
ptr += stride;
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