diff options
| author | Dan Rosenberg <drosenberg@vsecurity.com> | 2010-12-26 06:54:53 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-14 16:53:14 -0700 |
| commit | b5ee7ec47851f8f85c9b96f20abc17b605823edd (patch) | |
| tree | 394cbfc4e9b1deca9b3089853aa4ad81d5aa5561 /net | |
| parent | 69273e33a6d22d73dd89e4a68d54a0af3bd0e460 (diff) | |
CAN: Use inode instead of kernel address for /proc file
commit 9f260e0efa4766e56d0ac14f1aeea6ee5eb8fe83 upstream.
Since the socket address is just being used as a unique identifier, its
inode number is an alternative that does not leak potentially sensitive
information.
CC-ing stable because MITRE has assigned CVE-2010-4565 to the issue.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Moritz Muehlenhoff <jmm@debian.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/can/bcm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/can/bcm.c b/net/can/bcm.c index 03154d9b0331..3c03cb00b790 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -117,7 +117,7 @@ struct bcm_sock { struct list_head tx_ops; unsigned long dropped_usr_msgs; struct proc_dir_entry *bcm_proc_read; - char procname [20]; /* pointer printed in ASCII with \0 */ + char procname [32]; /* inode number in decimal with \0 */ }; static inline struct bcm_sock *bcm_sk(const struct sock *sk) @@ -1506,7 +1506,7 @@ static int bcm_connect(struct socket *sock, struct sockaddr *uaddr, int len, if (proc_dir) { /* unique socket address as filename */ - sprintf(bo->procname, "%p", sock); + sprintf(bo->procname, "%lu", sock_i_ino(sk)); bo->bcm_proc_read = proc_create_data(bo->procname, 0644, proc_dir, &bcm_proc_fops, sk); |