From: Alex Converse <alex.converse@gmail.com>
Date: Fri, 29 Jul 2011 22:27:36 +0000 (-0700)
Subject: mxfdec: Include FF_INPUT_BUFFER_PADDING_SIZE when allocating extradata.
X-Git-Tag: v0.8b1~1881
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1f6f58d5855288492fc2640a9f1035c01c75d356;p=platform%2Fupstream%2Flibav.git

mxfdec: Include FF_INPUT_BUFFER_PADDING_SIZE when allocating extradata.

This prevents out of bounds reads when extradata is being decoded.
---

diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index e2688b1..8906bdd 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -600,7 +600,7 @@ static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int
     default:
         /* Private uid used by SONY C0023S01.mxf */
         if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) {
-            descriptor->extradata = av_malloc(size);
+            descriptor->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
             if (!descriptor->extradata)
                 return -1;
             descriptor->extradata_size = size;