[FFmpeg-cvslog] dsicin: Add some basic sanity checks for fields read from the file

[Martin Storsjö]

ffmpeg | branch: release/0.10 | Martin Storsjö <martin at martin.st> | Wed Sep 11 15:13:48 2013 +0300| [e01d623e01937d43de404807ae0bf7c2cf88fb0b] | committer: Luca Barbato

dsicin: Add some basic sanity checks for fields read from the file

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable at libav.org
Signed-off-by: Martin Storsjö <martin at martin.st>
(cherry picked from commit 48d6556dd46d4f4fac10d0f4a819e314887cd50e)
Signed-off-by: Luca Barbato <lu_zero at gentoo.org>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e01d623e01937d43de404807ae0bf7c2cf88fb0b
---

 libavformat/dsicin.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/dsicin.c b/libavformat/dsicin.c
index 801ca6a..03af6c6 100644
--- a/libavformat/dsicin.c
+++ b/libavformat/dsicin.c
@@ -152,6 +152,8 @@ static int cin_read_frame_header(CinDemuxContext *cin, AVIOContext *pb) {
 
     if (avio_rl32(pb) != 0xAA55AA55)
         return AVERROR_INVALIDDATA;
+    if (hdr->video_frame_size < 0 || hdr->audio_frame_size < 0)
+        return AVERROR_INVALIDDATA;
 
     return 0;
 }