[libav-commits] wma: fix off-by-one in array bounds check.

Ronald S. Bultje git at libav.org
Sun Apr 1 19:05:00 CEST 2012


Module: libav
Branch: release/0.7
Commit: b4a223fd1936f8c7d3dd48f37f49790b0d04f429

Author:    Ronald S. Bultje <rsbultje at gmail.com>
Committer: Reinhard Tartler <siretart at tauware.de>
Date:      Wed Mar  7 14:18:14 2012 -0800

wma: fix off-by-one in array bounds check.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable at libav.org
(cherry picked from commit b4bccf3e4e58f6fe58043791ca09db01a4343fac)

Signed-off-by: Reinhard Tartler <siretart at tauware.de>

---

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

diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c
index c8e1de2..f0b043f 100644
--- a/libavcodec/wmadec.c
+++ b/libavcodec/wmadec.c
@@ -352,7 +352,7 @@ static int decode_exp_vlc(WMACodecContext *s, int ch)
         }
         /* NOTE: this offset is the same as MPEG4 AAC ! */
         last_exp += code - 60;
-        if ((unsigned)last_exp + 60 > FF_ARRAY_ELEMS(pow_tab)) {
+        if ((unsigned)last_exp + 60 >= FF_ARRAY_ELEMS(pow_tab)) {
             av_log(s->avctx, AV_LOG_ERROR, "Exponent out of range: %d\n",
                    last_exp);
             return -1;



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