diff options
Diffstat (limited to 'net/x25')
| -rw-r--r-- | net/x25/af_x25.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index 6c7104edec60..9796f3ed1edb 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -55,6 +55,7 @@ #include <linux/notifier.h> #include <linux/init.h> #include <linux/compat.h> +#include <linux/ctype.h> #include <net/x25.h> #include <net/compat.h> @@ -648,7 +649,7 @@ static int x25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) { struct sock *sk = sock->sk; struct sockaddr_x25 *addr = (struct sockaddr_x25 *)uaddr; - int rc = 0; + int len, i, rc = 0; lock_kernel(); if (!sock_flag(sk, SOCK_ZAPPED) || @@ -658,6 +659,14 @@ static int x25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) goto out; } + len = strlen(addr->sx25_addr.x25_addr); + for (i = 0; i < len; i++) { + if (!isdigit(addr->sx25_addr.x25_addr[i])) { + rc = -EINVAL; + goto out; + } + } + x25_sk(sk)->source_addr = addr->sx25_addr; x25_insert_socket(sk); sock_reset_flag(sk, SOCK_ZAPPED); |