From: Michael Niedermayer <michaelni@gmx.at>
Date: Fri, 7 Feb 2014 14:07:23 +0000 (+0100)
Subject: wmalosslessdec: fix mclms_coeffs* array size
X-Git-Tag: v11_alpha1~39
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=849b9d34c7ef70b370c53e7af3940f51cbc07d0f;p=platform%2Fupstream%2Flibav.git

wmalosslessdec: fix mclms_coeffs* array size

Fixes corruption of context

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org
Bug-Id: CVE-2014-2098
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---

diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c
index 6ee27d3..b8a1776 100644
--- a/libavcodec/wmalosslessdec.c
+++ b/libavcodec/wmalosslessdec.c
@@ -129,8 +129,8 @@ typedef struct WmallDecodeCtx {
 
     int8_t  mclms_order;
     int8_t  mclms_scaling;
-    int16_t mclms_coeffs[128];
-    int16_t mclms_coeffs_cur[4];
+    int16_t mclms_coeffs[WMALL_MAX_CHANNELS * WMALL_MAX_CHANNELS * 32];
+    int16_t mclms_coeffs_cur[WMALL_MAX_CHANNELS * WMALL_MAX_CHANNELS];
     int16_t mclms_prevvalues[WMALL_MAX_CHANNELS * 2 * 32];
     int16_t mclms_updates[WMALL_MAX_CHANNELS * 2 * 32];
     int     mclms_recent;