Patchwork [47/75] ipv4: Fixed MD5 key lookups when adding/ removing MD5 to/ from TCP sockets.

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Submitter Kamal Mostafa
Date July 30, 2013, 6:44 p.m.
Message ID <1375209919-1768-14-git-send-email-kamal@canonical.com>
Download mbox | patch
Permalink /patch/263476/
State New
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Comments

Kamal Mostafa - July 30, 2013, 6:44 p.m.
3.8.13.6 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Aydin Arik <aydin.arik@alliedtelesis.co.nz>

[ Upstream commit c0353c7b5da4cbd2ab8227e84bbc9c79890f24ce ]

MD5 key lookups on a given TCP socket were being performed
incorrectly. This fix alters parameter inputs to the MD5
lookup function tcp_md5_do_lookup, which is called by functions
tcp_md5_do_add and tcp_md5_do_del. Specifically, the change now
inputs the correct address and address family required to make
a proper lookup.

Signed-off-by: Aydin Arik <aydin.arik@alliedtelesis.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 net/ipv4/tcp_ipv4.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index d9130a9..47b459a 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1003,7 +1003,7 @@  int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr,
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct tcp_md5sig_info *md5sig;
 
-	key = tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&addr, AF_INET);
+	key = tcp_md5_do_lookup(sk, addr, family);
 	if (key) {
 		/* Pre-existing entry - just update that one. */
 		memcpy(key->key, newkey, newkeylen);
@@ -1048,7 +1048,7 @@  int tcp_md5_do_del(struct sock *sk, const union tcp_md5_addr *addr, int family)
 	struct tcp_md5sig_key *key;
 	struct tcp_md5sig_info *md5sig;
 
-	key = tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&addr, AF_INET);
+	key = tcp_md5_do_lookup(sk, addr, family);
 	if (!key)
 		return -ENOENT;
 	hlist_del_rcu(&key->node);