From: YOSHIFUJI Hideaki Date: Tue, 18 Apr 2006 21:46:52 +0000 (-0700) Subject: [IPV6] XFRM: Don't use old copy of pointer after pskb_may_pull(). X-Git-Tag: v2.6.17-rc2~2^2~4 X-Git-Url: http://ftp.safe.ca/?a=commitdiff_plain;h=e3cae904d7df4f86ea1d13d459e667d389cc35e3;p=safe%2Fjmp%2Flinux-2.6 [IPV6] XFRM: Don't use old copy of pointer after pskb_may_pull(). Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c index 91cce8b..588922b 100644 --- a/net/ipv6/xfrm6_policy.c +++ b/net/ipv6/xfrm6_policy.c @@ -193,7 +193,7 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl) { u16 offset = sizeof(struct ipv6hdr); struct ipv6hdr *hdr = skb->nh.ipv6h; - struct ipv6_opt_hdr *exthdr = (struct ipv6_opt_hdr*)(skb->nh.raw + offset); + struct ipv6_opt_hdr *exthdr; u8 nexthdr = skb->nh.ipv6h->nexthdr; memset(fl, 0, sizeof(struct flowi)); @@ -201,6 +201,8 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl) ipv6_addr_copy(&fl->fl6_src, &hdr->saddr); while (pskb_may_pull(skb, skb->nh.raw + offset + 1 - skb->data)) { + exthdr = (struct ipv6_opt_hdr*)(skb->nh.raw + offset); + switch (nexthdr) { case NEXTHDR_ROUTING: case NEXTHDR_HOP: