diff options
| author | Roman Kubiak <r.kubiak@samsung.com> | 2015-12-17 13:24:35 +0100 |
|---|---|---|
| committer | Casey Schaufler <casey@schaufler-ca.com> | 2015-12-17 10:21:56 -0800 |
| commit | 81bd0d56298f93af6ac233d8a7e8b29aa4b094b7 (patch) | |
| tree | 4fb0eb956481a9155e1cd9fffcd04083d3dfc601 /security/smack | |
| parent | 79be093500791cc25cc31bcaec5a4db62e21497b (diff) | |
| download | linux-81bd0d56298f93af6ac233d8a7e8b29aa4b094b7.tar.gz | |
Smack: type confusion in smak sendmsg() handler
Smack security handler for sendmsg() syscall is vulnerable to type confusion issue what can allow to privilege escalation into root or cause denial of service. A malicious attacker can create socket of one type for example AF_UNIX and pass is into sendmsg() function ensuring that this is AF_INET socket. Remedy Do not trust user supplied data. Proposed fix below. Signed-off-by: Roman Kubiak <r.kubiak@samsung.com> Signed-off-by: Mateusz Fruba <m.fruba@samsung.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Diffstat (limited to 'security/smack')
| -rw-r--r-- | security/smack/smack_lsm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index b20ef0602267..0e7703773a97 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -3780,7 +3780,7 @@ static int smack_socket_sendmsg(struct socket *sock, struct msghdr *msg, if (sip == NULL) return 0; - switch (sip->sin_family) { + switch (sock->sk->sk_family) { case AF_INET: rc = smack_netlabel_send(sock->sk, sip); break; |