[FFmpeg-cvslog] flvdec: allocate large enough buffer so get_bits() doesnt overread

Michael Niedermayer git at videolan.org
Mon Apr 16 12:17:36 CEST 2012


ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Mon Apr 16 12:01:55 2012 +0200| [c4ce8709676a6f0b41761093b0da08de72799ba9] | committer: Michael Niedermayer

flvdec: allocate large enough buffer so get_bits() doesnt overread

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=c4ce8709676a6f0b41761093b0da08de72799ba9
---

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

diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index c444641..3d23b67 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -112,7 +112,7 @@ static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream, int flv_co
                 vcodec->codec_id = CODEC_ID_VP6A;
             if(vcodec->extradata_size != 1) {
                 vcodec->extradata_size = 1;
-                vcodec->extradata = av_malloc(1);
+                vcodec->extradata = av_malloc(1 + FF_INPUT_BUFFER_PADDING_SIZE);
             }
             vcodec->extradata[0] = avio_r8(s->pb);
             return 1; // 1 byte body size adjustment for flv_read_packet()



More information about the ffmpeg-cvslog mailing list