[FFmpeg-cvslog] matroskadec: fix out of bounds write

[Ronald S. Bultje]

ffmpeg | branch: master | Ronald S. Bultje <rsbultje at gmail.com> | Sat Oct 15 00:03:55 2011 +0200| [723229c11f1400e6a09c8a1c9c27193f376eb1d1] | committer: Janne Grunau

matroskadec: fix out of bounds write

Signed-off-by: Janne Grunau <janne-libav at jannau.net>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=723229c11f1400e6a09c8a1c9c27193f376eb1d1
---

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

diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 89df095..237e929 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1783,7 +1783,7 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data,
                         lace_size[n] = lace_size[n - 1] + snum;
                         total += lace_size[n];
                     }
-                    lace_size[n] = size - total;
+                    lace_size[laces - 1] = size - total;
                     break;
                 }
             }