diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ipip.c | 4 | ||||
| -rw-r--r-- | net/ipv4/tunnel4.c | 8 | ||||
| -rw-r--r-- | net/ipv4/xfrm4_input.c | 2 |
3 files changed, 8 insertions, 6 deletions
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c index eef07b0..ea398ee 100644 --- a/net/ipv4/ipip.c +++ b/net/ipv4/ipip.c @@ -474,9 +474,6 @@ static int ipip_rcv(struct sk_buff *skb) struct iphdr *iph; struct ip_tunnel *tunnel; - if (!pskb_may_pull(skb, sizeof(struct iphdr))) - goto out; - iph = skb->nh.iph; read_lock(&ipip_lock); @@ -508,7 +505,6 @@ static int ipip_rcv(struct sk_buff *skb) } read_unlock(&ipip_lock); -out: return -1; } diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c index 0d7d386..8d30c48 100644 --- a/net/ipv4/tunnel4.c +++ b/net/ipv4/tunnel4.c @@ -8,6 +8,8 @@ #include <linux/mutex.h> #include <linux/netdevice.h> #include <linux/skbuff.h> +#include <net/icmp.h> +#include <net/ip.h> #include <net/protocol.h> #include <net/xfrm.h> @@ -70,10 +72,16 @@ static int tunnel4_rcv(struct sk_buff *skb) { struct xfrm_tunnel *handler; + if (!pskb_may_pull(skb, sizeof(struct iphdr))) + goto drop; + for (handler = tunnel4_handlers; handler; handler = handler->next) if (!handler->handler(skb)) return 0; + icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0); + +drop: kfree_skb(skb); return 0; } diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c index 7a0b952..3e174c8 100644 --- a/net/ipv4/xfrm4_input.c +++ b/net/ipv4/xfrm4_input.c @@ -37,8 +37,6 @@ static int xfrm4_parse_spi(struct sk_buff *skb, u8 nexthdr, u32 *spi, u32 *seq) { switch (nexthdr) { case IPPROTO_IPIP: - if (!pskb_may_pull(skb, sizeof(struct iphdr))) - return -EINVAL; *spi = skb->nh.iph->saddr; *seq = 0; return 0; |