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authorRémi Denis-Courmont <remi.denis-courmont@nokia.com>2010-05-25 16:08:39 -0700
committerDavid S. Miller <davem@davemloft.net>2010-05-25 16:08:39 -0700
commite513480e28cdfd868755f05c1a654fcfcee58070 (patch)
tree53fd9bf4786dc56843641912fdc260c1b76f1613 /net/phonet
parent7466a38478a30d5f7248134c9bdcb4e1c01fe4d9 (diff)
Phonet: fix potential use-after-free in pep_sock_close()
sk_common_release() might destroy our last reference to the socket. So an extra temporary reference is needed during cleanup. Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/phonet')
-rw-r--r--net/phonet/pep.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index af4d38bc3b22..7b048a35ca58 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -626,6 +626,7 @@ static void pep_sock_close(struct sock *sk, long timeout)
struct pep_sock *pn = pep_sk(sk);
int ifindex = 0;
+ sock_hold(sk); /* keep a reference after sk_common_release() */
sk_common_release(sk);
lock_sock(sk);
@@ -644,6 +645,7 @@ static void pep_sock_close(struct sock *sk, long timeout)
if (ifindex)
gprs_detach(sk);
+ sock_put(sk);
}
static int pep_wait_connreq(struct sock *sk, int noblock)

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