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authorPatrick McHardy <kaber@trash.net>2006-03-12 20:34:27 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-12 20:39:38 -0800
commitcc9a06cd8d6fbb69b4d3c46760c132cfe312fb85 (patch)
treec6dce78c5e845d9cd4d5baab7c8b29306fa77541 /net
parentf8dc01f543f28253abeef649987249210d8db3cc (diff)
downloadlinux-cc9a06cd8d6fbb69b4d3c46760c132cfe312fb85.tar.bz2
[NETLINK]: Fix use-after-free in netlink_recvmsg
The skb given to netlink_cmsg_recv_pktinfo is already freed, move it up a few lines. Coverity #948 Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/netlink/af_netlink.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 6b9772d95872..59dc7d140600 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1194,6 +1194,9 @@ static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock,
msg->msg_namelen = sizeof(*addr);
}
+ if (nlk->flags & NETLINK_RECV_PKTINFO)
+ netlink_cmsg_recv_pktinfo(msg, skb);
+
if (NULL == siocb->scm) {
memset(&scm, 0, sizeof(scm));
siocb->scm = &scm;
@@ -1205,8 +1208,6 @@ static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock,
netlink_dump(sk);
scm_recv(sock, msg, siocb->scm, flags);
- if (nlk->flags & NETLINK_RECV_PKTINFO)
- netlink_cmsg_recv_pktinfo(msg, skb);
out:
netlink_rcv_wake(sk);