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| author | Paolo Abeni <pabeni@redhat.com> | 2019-05-08 15:32:51 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-08 09:45:38 -0700 |
| commit | c7e0d6cca86581092cbbf2cd868b3601495554cf (patch) | |
| tree | c8ad914630eb08d7f5197192d0b0456ebc659282 /security/selinux | |
| parent | c264ed44d857c50f43be08572668afa374bf6a48 (diff) | |
| download | linux-c7e0d6cca86581092cbbf2cd868b3601495554cf.tar.gz linux-c7e0d6cca86581092cbbf2cd868b3601495554cf.tar.bz2 linux-c7e0d6cca86581092cbbf2cd868b3601495554cf.zip | |
selinux: do not report error on connect(AF_UNSPEC)
calling connect(AF_UNSPEC) on an already connected TCP socket is an
established way to disconnect() such socket. After commit 68741a8adab9
("selinux: Fix ltp test connect-syscall failure") it no longer works
and, in the above scenario connect() fails with EAFNOSUPPORT.
Fix the above falling back to the generic/old code when the address family
is not AF_INET{4,6}, but leave the SCTP code path untouched, as it has
specific constraints.
Fixes: 68741a8adab9 ("selinux: Fix ltp test connect-syscall failure")
Reported-by: Tom Deseyn <tdeseyn@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'security/selinux')
| -rw-r--r-- | security/selinux/hooks.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index c61787b15f27..d82b87c16b0a 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -4649,7 +4649,7 @@ static int selinux_socket_connect_helper(struct socket *sock, struct lsm_network_audit net = {0,}; struct sockaddr_in *addr4 = NULL; struct sockaddr_in6 *addr6 = NULL; - unsigned short snum; + unsigned short snum = 0; u32 sid, perm; /* sctp_connectx(3) calls via selinux_sctp_bind_connect() @@ -4674,12 +4674,12 @@ static int selinux_socket_connect_helper(struct socket *sock, break; default: /* Note that SCTP services expect -EINVAL, whereas - * others expect -EAFNOSUPPORT. + * others must handle this at the protocol level: + * connect(AF_UNSPEC) on a connected socket is + * a documented way disconnect the socket. */ if (sksec->sclass == SECCLASS_SCTP_SOCKET) return -EINVAL; - else - return -EAFNOSUPPORT; } err = sel_netport_sid(sk->sk_protocol, snum, &sid); |