[FFmpeg-cvslog] wmalosslessdec: fix mclms_coeffs* array size
Michael Niedermayer
git at videolan.org
Fri Aug 8 15:02:38 CEST 2014
ffmpeg | branch: release/1.1 | Michael Niedermayer <michaelni at gmx.at> | Fri Feb 7 15:07:23 2014 +0100| [36d8914f1b94e4731d2fc67162902839c106e72e] | committer: Anton Khirnov
wmalosslessdec: fix mclms_coeffs* array size
Fixes corruption of context
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable at libav.org
Bug-Id: CVE-2014-2098
Signed-off-by: Anton Khirnov <anton at khirnov.net>
(cherry picked from commit 849b9d34c7ef70b370c53e7af3940f51cbc07d0f)
Signed-off-by: Anton Khirnov <anton at khirnov.net>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=36d8914f1b94e4731d2fc67162902839c106e72e
---
libavcodec/wmalosslessdec.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c
index 747ac37..8060d27 100644
--- a/libavcodec/wmalosslessdec.c
+++ b/libavcodec/wmalosslessdec.c
@@ -127,8 +127,8 @@ 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;
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