[libav-stable] matroska: fix a corner case in ebml-lace parsing

Luca Barbato git at libav.org
Wed Apr 3 12:56:45 CEST 2013


Module: libav
Branch: master
Commit: 8a96df7b70be509dae9ceec82d2c10a20361356d

Author:    Luca Barbato <lu_zero at gentoo.org>
Committer: Luca Barbato <lu_zero at gentoo.org>
Date:      Thu Mar 28 11:52:52 2013 +0100

matroska: fix a corner case in ebml-lace parsing

Make sure we notice when the lace_size[n] is a negative value.

CC: libav-stable at libav.org

---

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

diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 2ec669f..67a3308 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1820,7 +1820,7 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf,
 
     case 0x3: /* EBML lacing */ {
         uint64_t num;
-        uint32_t total;
+        uint64_t total;
         n = matroska_ebmlnum_uint(matroska, data, size, &num);
         if (n < 0) {
             av_log(matroska->ctx, AV_LOG_INFO,



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