Subject: can-bcm: fix minor heap overflow

From: Oliver Hartkopp <[email-masked]>
Date: Wed, 10 Nov 2010 23:10:30 +0100

On 64-bit platforms the ASCII representation of a pointer may be up to 17
bytes long. This patch increases the length of the buffer accordingly.

http://marc.info/?l=linux-netdev&m=128872251418192&w=2

Reported-by: Dan Rosenberg <[email-masked]>
Signed-off-by: Oliver Hartkopp <[email-masked]>
CC: Linus Torvalds <[email-masked]>

---

diff --git a/net/can/bcm.c b/net/can/bcm.c
index 08ffe9e..6faa825 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -125,7 +125,7 @@ struct bcm_sock {
 	struct list_head tx_ops;
 	unsigned long dropped_usr_msgs;
 	struct proc_dir_entry *bcm_proc_read;
-	char procname [9]; /* pointer printed in ASCII with \0 */
+	char procname [20]; /* pointer printed in ASCII with \0 */
 };

 static inline struct bcm_sock *bcm_sk(const struct sock *sk)