| From | Ben Hutchings <> | Date | Fri, 09 Oct 2015 01:12:28 +0100 | Subject | [PATCH 3.2 095/107] net/tipc: initialize security state for new connection socket |
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3.2.72-rc1 review patch. If anyone has any objections, please let me know.
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From: Stephen Smalley <sds@tycho.nsa.gov>
[ Upstream commit fdd75ea8df370f206a8163786e7470c1277a5064 ]
Calling connect() with an AF_TIPC socket would trigger a series of error messages from SELinux along the lines of: SELinux: Invalid class 0 type=AVC msg=audit(1434126658.487:34500): avc: denied { <unprintable> } for pid=292 comm="kworker/u16:5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=<unprintable> permissive=0
This was due to a failure to initialize the security state of the new connection sock by the tipc code, leaving it with junk in the security class field and an unlabeled secid. Add a call to security_sk_clone() to inherit the security state from the parent socket.
Reported-by: Tim Shearer <tim.shearer@overturenetworks.com> Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net> [bwh: Backported to 3.2: adjust context, indentation] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1541,6 +1541,8 @@ static int accept(struct socket *sock, s u32 new_ref = new_tport->ref; struct tipc_msg *msg = buf_msg(buf); + security_sk_clone(sock->sk, new_sock->sk); + lock_sock(new_sk); /*
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