[FFmpeg-cvslog] avformat/rmdec: Check codec_data_size

Michael Niedermayer git at videolan.org
Wed Dec 3 20:07:07 CET 2014


ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed Dec  3 20:01:18 2014 +0100| [a6f730730b82645a9d31aad0968487cb77d6946c] | committer: Michael Niedermayer

avformat/rmdec: Check codec_data_size

Fixes infinite loop
Fixes Ticket4154

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a6f730730b82645a9d31aad0968487cb77d6946c
---

 libavformat/rmdec.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c
index c46b53f..19bd7a7 100644
--- a/libavformat/rmdec.c
+++ b/libavformat/rmdec.c
@@ -312,6 +312,9 @@ ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
     int64_t codec_pos;
     int ret;
 
+    if (codec_data_size < 0)
+        return AVERROR_INVALIDDATA;
+
     avpriv_set_pts_info(st, 64, 1, 1000);
     codec_pos = avio_tell(pb);
     v = avio_rb32(pb);



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