[FFmpeg-cvslog] yopdec: check frame oddness to be within supported limits

[Michael Niedermayer]

ffmpeg | branch: release/0.6 | Michael Niedermayer <michaelni at gmx.at> | Fri Jun  1 15:52:20 2012 +0200| [3074e8f78c4d84f93c1bdc05f36f0bce8b8a830f] | committer: Michael Niedermayer

yopdec: check frame oddness to be within supported limits

Fixes Ticket1365

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit febc013dc5d6db1535a4f91cf02fa8089038937c)

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3074e8f78c4d84f93c1bdc05f36f0bce8b8a830f
---

 libavcodec/yop.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/yop.c b/libavcodec/yop.c
index 69f2e8e..7f933b5 100644
--- a/libavcodec/yop.c
+++ b/libavcodec/yop.c
@@ -223,6 +223,10 @@ static int yop_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     s->low_nibble = NULL;
 
     is_odd_frame = avpkt->data[0];
+    if(is_odd_frame>1){
+        av_log(avctx, AV_LOG_ERROR, "frame is too odd %d\n", is_odd_frame);
+        return AVERROR_INVALIDDATA;
+    }
     firstcolor   = s->first_color[is_odd_frame];
     palette      = (uint32_t *)s->frame.data[1];