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dsicinav: Check for out of bounds writes
author
Laurent Aimar
<fenrir@videolan.org>
Thu, 29 Sep 2011 23:13:35 +0000
(23:13 +0000)
committer
Janne Grunau
<janne-libav@jannau.net>
Fri, 7 Oct 2011 14:25:31 +0000
(16:25 +0200)
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
libavcodec/dsicinav.c
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diff --git
a/libavcodec/dsicinav.c
b/libavcodec/dsicinav.c
index
5fe99ba
..
3b545e7
100644
(file)
--- a/
libavcodec/dsicinav.c
+++ b/
libavcodec/dsicinav.c
@@
-219,6
+219,8
@@
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;