[FFmpeg-cvslog] asfdec: fix integer overflow in packet_replic_size check

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Thu Jan 31 03:36:59 2013 +0100| [fe6767f849d9cfe51f422de9d807137d756de7aa] | committer: Michael Niedermayer

asfdec: fix integer overflow in packet_replic_size check

Fixes assertion failure

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=fe6767f849d9cfe51f422de9d807137d756de7aa
---

 libavformat/asfdec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/asfdec.c b/libavformat/asfdec.c
index 5c2cf8b..465d9e5 100644
--- a/libavformat/asfdec.c
+++ b/libavformat/asfdec.c
@@ -943,7 +943,7 @@ static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
     av_dlog(asf, "key:%d stream:%d seq:%d offset:%d replic_size:%d\n",
             asf->packet_key_frame, asf->stream_index, asf->packet_seq,
             asf->packet_frag_offset, asf->packet_replic_size);
-    if (rsize+asf->packet_replic_size > asf->packet_size_left) {
+    if (rsize+(int64_t)asf->packet_replic_size > asf->packet_size_left) {
         av_log(s, AV_LOG_ERROR, "packet_replic_size %d is invalid\n", asf->packet_replic_size);
         return AVERROR_INVALIDDATA;
     }