Re: [2.6 patch] crypto/aes.c: array overrun

[David McCullough <david_mccullough@au.securecomputing.com>]

Jivin Herbert Xu lays it down ...
> On Wed, Mar 15, 2006 at 08:54:48AM +1000, David McCullough wrote:
> >  
> >  struct aes_ctx {
> >  	int key_length;
> > -	u32 E[60];
> > -	u32 D[60];
> > +	u32 _KEYS[120];
> >  };
> 
> Looks good.  Thanks for this David.
> 
> Could you please change the name from _KEYS to buf and patch the x86-64
> version as well?

No problems, attached.

Cheers,
Davidm

-- 
David McCullough, david_mccullough@au.securecomputing.com, Ph:+61 734352815
Secure Computing - SnapGear  http://www.uCdot.org http://www.cyberguard.com

Index: linux-2.6.x/crypto/aes.c
===================================================================
RCS file: linux-2.6.x/crypto/aes.c,v
retrieving revision 1.1.1.6
diff -u -r1.1.1.6 aes.c
--- linux-2.6.x/crypto/aes.c	31 Aug 2005 00:33:03 -0000	1.1.1.6
+++ linux-2.6.x/crypto/aes.c	15 Mar 2006 01:09:37 -0000
@@ -78,12 +78,11 @@
 
 struct aes_ctx {
 	int key_length;
-	u32 E[60];
-	u32 D[60];
+	u32 buf[120];
 };
 
-#define E_KEY ctx->E
-#define D_KEY ctx->D
+#define E_KEY (&ctx->buf[0])
+#define D_KEY (&ctx->buf[60])
 
 static u8 pow_tab[256] __initdata;
 static u8 log_tab[256] __initdata;
Index: linux-2.6.x/arch/x86_64/crypto/aes.c
===================================================================
RCS file: linux-2.6.x/arch/x86_64/crypto/aes.c,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 aes.c
--- linux-2.6.x/arch/x86_64/crypto/aes.c	31 Aug 2005 00:33:07 -0000	1.1.1.1
+++ linux-2.6.x/arch/x86_64/crypto/aes.c	15 Mar 2006 01:09:37 -0000
@@ -79,12 +79,11 @@
 struct aes_ctx
 {
 	u32 key_length;
-	u32 E[60];
-	u32 D[60];
+	u32 buf[120];
 };
 
-#define E_KEY ctx->E
-#define D_KEY ctx->D
+#define E_KEY (&ctx->buf[0])
+#define D_KEY (&ctx->buf[60])
 
 static u8 pow_tab[256] __initdata;
 static u8 log_tab[256] __initdata;