[FFmpeg-cvslog] smackerdemux: Allocate padding for extradata

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Apr 22 11:23:58 2012 +0200| [2a59abf1a8859bd63f5760e98ffcb381d407451d] | committer: Michael Niedermayer

smackerdemux: Allocate padding for extradata

Fixes slight overread.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2a59abf1a8859bd63f5760e98ffcb381d407451d
---

 libavformat/smacker.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavformat/smacker.c b/libavformat/smacker.c
index a3545f4..84a53ea 100644
--- a/libavformat/smacker.c
+++ b/libavformat/smacker.c
@@ -203,7 +203,7 @@ static int smacker_read_header(AVFormatContext *s)
 
 
     /* load trees to extradata, they will be unpacked by decoder */
-    st->codec->extradata = av_malloc(smk->treesize + 16);
+    st->codec->extradata = av_malloc(smk->treesize + 16 + FF_INPUT_BUFFER_PADDING_SIZE);
     st->codec->extradata_size = smk->treesize + 16;
     if(!st->codec->extradata){
         av_log(s, AV_LOG_ERROR, "Cannot allocate %i bytes of extradata\n", smk->treesize + 16);