From c45ec06c74512265969aef40b00f320c6afb7a90 Mon Sep 17 00:00:00 2001
From: Roel Kluin <roel.kluin@gmail.com>
Date: Wed, 29 Jul 2009 11:46:59 +0200
Subject: [PATCH] sound: aedsp16: Buffer overflow
DSPVersion is declared as char[3], but the sprintf writes at least 4 bytes
including terminating null.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/oss/aedsp16.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/sound/oss/aedsp16.c b/sound/oss/aedsp16.c
index 3ee9900ffd7b3..35b5912cf3f81 100644
--- a/sound/oss/aedsp16.c
+++ b/sound/oss/aedsp16.c
@@ -325,8 +325,9 @@
/*
* Size of character arrays that store name and version of sound card
*/
-#define CARDNAMELEN 15 /* Size of the card's name in chars */
-#define CARDVERLEN 2 /* Size of the card's version in chars */
+#define CARDNAMELEN 15 /* Size of the card's name in chars */
+#define CARDVERLEN 10 /* Size of the card's version in chars */
+#define CARDVERDIGITS 2 /* Number of digits in the version */
#if defined(CONFIG_SC6600)
/*
@@ -410,7 +411,7 @@
static int soft_cfg __initdata = 0; /* bitmapped config */
static int soft_cfg_mss __initdata = 0; /* bitmapped mss config */
-static int ver[CARDVERLEN] __initdata = {0, 0}; /* DSP Ver:
+static int ver[CARDVERDIGITS] __initdata = {0, 0}; /* DSP Ver:
hi->ver[0] lo->ver[1] */
#if defined(CONFIG_SC6600)
@@ -957,7 +958,7 @@ static int __init aedsp16_dsp_version(int port)
* string is finished.
*/
ver[len++] = ret;
- } while (len < CARDVERLEN);
+ } while (len < CARDVERDIGITS);
sprintf(DSPVersion, "%d.%d", ver[0], ver[1]);
DBG(("success.\n"));