[FFmpeg-cvslog] Check for out of bounds reads in the Delphine Software International CIN decoder .

[Laurent Aimar]

ffmpeg | branch: release/0.8 | Laurent Aimar <fenrir at videolan.org> | Fri Sep 30 00:05:50 2011 +0200| [18cfe0238df259e4b541d28b465688bea4781b16] | committer: Michael Niedermayer

Check for out of bounds reads in the Delphine Software International CIN decoder.

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 8e5f093c2cf13eab3d68d893bf8f30c56ba4e733)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=18cfe0238df259e4b541d28b465688bea4781b16
---

 libavcodec/dsicinav.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/libavcodec/dsicinav.c b/libavcodec/dsicinav.c
index f125607..c33b3ed 100644
--- a/libavcodec/dsicinav.c
+++ b/libavcodec/dsicinav.c
@@ -217,6 +217,8 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
     bitmap_frame_size = buf_size - 4;
 
     /* handle palette */
+    if (bitmap_frame_size < palette_colors_count * (3 + (palette_type != 0)))
+        return AVERROR_INVALIDDATA;
     if (palette_type == 0) {
         for (i = 0; i < palette_colors_count; ++i) {
             cin->palette[i] = bytestream_get_le24(&buf);