[IPV6] XFRM: Don't use old copy of pointer after pskb_may_pull().
Signed-off-by: YOSHIFUJI Hideaki <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
---
net/ipv6/xfrm6_policy.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- linux-2.6.16.9.orig/net/ipv6/xfrm6_policy.c
+++ linux-2.6.16.9/net/ipv6/xfrm6_policy.c
@@ -193,7 +193,7 @@ _decode_session6(struct sk_buff *skb, st
{
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, st
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:
--
-
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