From 13fcfbb0675bf87da694f55dec11cada489a205c Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@sunset.davemloft.net>
Date: Mon, 12 Feb 2007 13:53:54 -0800
Subject: [PATCH] [XFRM]: Fix OOPSes in xfrm_audit_log().
Make sure that this function is called correctly, and
add BUG() checking to ensure the arguments are sane.
Based upon a patch by Joy Latten.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/key/af_key.c | 11 ++++++-----
net/xfrm/xfrm_policy.c | 7 ++++++-
net/xfrm/xfrm_user.c | 12 +++++++-----
3 files changed, 19 insertions(+), 11 deletions(-)
diff --git a/net/key/af_key.c b/net/key/af_key.c
index f3a026ff9b2c..1c58204d767e 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -2297,16 +2297,17 @@ static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, struct sadb_msg
&sel, tmp.security, 1);
security_xfrm_policy_free(&tmp);
- xfrm_audit_log(audit_get_loginuid(current->audit_context), 0,
- AUDIT_MAC_IPSEC_DELSPD, (xp) ? 1 : 0, xp, NULL);
-
if (xp == NULL)
return -ENOENT;
- err = 0;
+ err = security_xfrm_policy_delete(xp);
- if ((err = security_xfrm_policy_delete(xp)))
+ xfrm_audit_log(audit_get_loginuid(current->audit_context), 0,
+ AUDIT_MAC_IPSEC_DELSPD, err ? 0 : 1, xp, NULL);
+
+ if (err)
goto out;
+
c.seq = hdr->sadb_msg_seq;
c.pid = hdr->sadb_msg_pid;
c.event = XFRM_MSG_DELPOLICY;
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index a24f38510719..c394b413f651 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1997,9 +1997,14 @@ void xfrm_audit_log(uid_t auid, u32 sid, int type, int result,
if (audit_enabled == 0)
return;
+ BUG_ON((type == AUDIT_MAC_IPSEC_ADDSA ||
+ type == AUDIT_MAC_IPSEC_DELSA) && !x);
+ BUG_ON((type == AUDIT_MAC_IPSEC_ADDSPD ||
+ type == AUDIT_MAC_IPSEC_DELSPD) && !xp);
+
audit_buf = audit_log_start(current->audit_context, GFP_ATOMIC, type);
if (audit_buf == NULL)
- return;
+ return;
switch(type) {
case AUDIT_MAC_IPSEC_ADDSA:
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index d55436d00e86..256745321611 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1273,10 +1273,6 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
xp = xfrm_policy_bysel_ctx(type, p->dir, &p->sel, tmp.security, delete);
security_xfrm_policy_free(&tmp);
}
- if (delete)
- xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
- AUDIT_MAC_IPSEC_DELSPD, (xp) ? 1 : 0, xp, NULL);
-
if (xp == NULL)
return -ENOENT;
@@ -1292,8 +1288,14 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
MSG_DONTWAIT);
}
} else {
- if ((err = security_xfrm_policy_delete(xp)) != 0)
+ err = security_xfrm_policy_delete(xp);
+
+ xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
+ AUDIT_MAC_IPSEC_DELSPD, err ? 0 : 1, xp, NULL);
+
+ if (err != 0)
goto out;
+
c.data.byid = p->index;
c.event = nlh->nlmsg_type;
c.seq = nlh->nlmsg_seq;
--
GitLab