[FFmpeg-devel] [PATCH 6/8] Check for out of bounds writes in the Delphine Software International CIN decoder.

[fenrir at elivagar.org]

From: Laurent Aimar <fenrir at videolan.org>

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

diff --git a/libavcodec/dsicinav.c b/libavcodec/dsicinav.c
index 691b597..05d9e4c 100644
--- a/libavcodec/dsicinav.c
+++ b/libavcodec/dsicinav.c
@@ -220,6 +220,8 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
     if (bitmap_frame_size < palette_colors_count * (3 + (palette_type != 0)))
         return AVERROR_INVALIDDATA;
     if (palette_type == 0) {
+        if (palette_colors_count > 256)
+            return AVERROR_INVALIDDATA;
         for (i = 0; i < palette_colors_count; ++i) {
             cin->palette[i] = bytestream_get_le24(&buf);
             bitmap_frame_size -= 3;
-- 
1.7.2.5