From c8bf4d04f970fafb3430d332533e1cf103f2a018 Mon Sep 17 00:00:00 2001 From: Timo Teräs Date: Wed, 31 Mar 2010 00:17:04 +0000 Subject: xfrm_user: verify policy direction at XFRM_MSG_POLEXPIRE handler Add missing check for policy direction verification. This is especially important since without this xfrm_user may end up deleting per-socket policy which is not allowed. Signed-off-by: Timo Teras Acked-by: Herbert Xu Signed-off-by: David S. Miller --- net/xfrm/xfrm_user.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'net/xfrm') diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 6106b72826d3..da5ba86181de 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -1741,6 +1741,10 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh, if (err) return err; + err = verify_policy_dir(p->dir); + if (err) + return err; + if (p->index) xp = xfrm_policy_byid(net, mark, type, p->dir, p->index, 0, &err); else { -- cgit v1.2.3