From de92fc97e12d4b9170d1ab3dbccbdcb8c56add31 Mon Sep 17 00:00:00 2001 From: Gao feng Date: Tue, 17 Dec 2013 11:10:42 +0800 Subject: [PATCH] audit: fix incorrect set of audit_sock NETLINK_CB(skb).sk is the socket of user space process, netlink_unicast in kauditd_send_skb wants the kernel side socket. Since the sk_state of audit netlink socket is not NETLINK_CONNECTED, so the netlink_getsockbyportid doesn't return -ECONNREFUSED. And the socket of userspace process can be released anytime, so the audit_sock may point to invalid socket. this patch sets the audit_sock to the kernel side audit netlink socket. Signed-off-by: Gao feng Acked-by: Eric Paris Signed-off-by: Richard Guy Briggs Signed-off-by: Eric Paris --- kernel/audit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/audit.c b/kernel/audit.c index b27b706..ef5bd63 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -821,7 +821,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) audit_log_config_change("audit_pid", new_pid, audit_pid, 1); audit_pid = new_pid; audit_nlk_portid = NETLINK_CB(skb).portid; - audit_sock = NETLINK_CB(skb).sk; + audit_sock = skb->sk; } if (s.mask & AUDIT_STATUS_RATE_LIMIT) { err = audit_set_rate_limit(s.rate_limit); -- 2.7.4