diff options
Diffstat (limited to 'net/ipv4/fib_frontend.c')
| -rw-r--r-- | net/ipv4/fib_frontend.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 882f88f6d13b..4e3d3811dea2 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -20,6 +20,7 @@ #include <asm/uaccess.h> #include <asm/system.h> #include <linux/bitops.h> +#include <linux/capability.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/sched.h> @@ -30,6 +31,7 @@ #include <linux/errno.h> #include <linux/in.h> #include <linux/inet.h> +#include <linux/inetdevice.h> #include <linux/netdevice.h> #include <linux/if_arp.h> #include <linux/skbuff.h> @@ -287,13 +289,13 @@ static int inet_check_attr(struct rtmsg *r, struct rtattr **rta) { int i; - for (i=1; i<=RTA_MAX; i++) { - struct rtattr *attr = rta[i-1]; + for (i=1; i<=RTA_MAX; i++, rta++) { + struct rtattr *attr = *rta; if (attr) { if (RTA_PAYLOAD(attr) < 4) return -EINVAL; if (i != RTA_MULTIPATH && i != RTA_METRICS) - rta[i-1] = (struct rtattr*)RTA_DATA(attr); + *rta = (struct rtattr*)RTA_DATA(attr); } } return 0; @@ -544,12 +546,16 @@ static void nl_fib_input(struct sock *sk, int len) struct sk_buff *skb = NULL; struct nlmsghdr *nlh = NULL; struct fib_result_nl *frn; - int err; u32 pid; struct fib_table *tb; - skb = skb_recv_datagram(sk, 0, 0, &err); + skb = skb_dequeue(&sk->sk_receive_queue); nlh = (struct nlmsghdr *)skb->data; + if (skb->len < NLMSG_SPACE(0) || skb->len < nlh->nlmsg_len || + nlh->nlmsg_len < NLMSG_LENGTH(sizeof(*frn))) { + kfree_skb(skb); + return; + } frn = (struct fib_result_nl *) NLMSG_DATA(nlh); tb = fib_get_table(frn->tb_id_in); |