Revert "SELinux: use SECINITSID_NETMSG instead of SECINITSID_UNLABELED for NetLabel"
This reverts commit 9faf65fb6ee2b4e08325ba2d69e5ccf0c46453d0.
It bit people like Michal Piotrowski:
"My system is too secure, I can not login :)"
because it changed how CONFIG_NETLABEL worked, and broke older SElinux
policies.
As a result, quoth James Morris:
"Can you please revert this patch?
We thought it only affected people running MLS, but it will affect others.
Sorry for the hassle."
Cc: James Morris <jmorris@namei.org>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Paul Moore <paul.moore@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/security/selinux/netlabel.c b/security/selinux/netlabel.c
index 8192e8b..e64eca2 100644
--- a/security/selinux/netlabel.c
+++ b/security/selinux/netlabel.c
@@ -158,7 +158,9 @@
netlbl_secattr_init(&secattr);
rc = netlbl_skbuff_getattr(skb, &secattr);
if (rc == 0 && secattr.flags != NETLBL_SECATTR_NONE)
- rc = security_netlbl_secattr_to_sid(&secattr, base_sid, sid);
+ rc = security_netlbl_secattr_to_sid(&secattr,
+ base_sid,
+ sid);
else
*sid = SECSID_NULL;
netlbl_secattr_destroy(&secattr);
@@ -196,7 +198,7 @@
if (netlbl_sock_getattr(sk, &secattr) == 0 &&
secattr.flags != NETLBL_SECATTR_NONE &&
security_netlbl_secattr_to_sid(&secattr,
- SECINITSID_NETMSG,
+ SECINITSID_UNLABELED,
&nlbl_peer_sid) == 0)
sksec->peer_sid = nlbl_peer_sid;
netlbl_secattr_destroy(&secattr);
@@ -293,32 +295,38 @@
struct avc_audit_data *ad)
{
int rc;
- u32 nlbl_sid;
- u32 perm;
+ u32 netlbl_sid;
+ u32 recv_perm;
- rc = selinux_netlbl_skbuff_getsid(skb, SECINITSID_NETMSG, &nlbl_sid);
+ rc = selinux_netlbl_skbuff_getsid(skb,
+ SECINITSID_UNLABELED,
+ &netlbl_sid);
if (rc != 0)
return rc;
- if (nlbl_sid == SECSID_NULL)
- nlbl_sid = SECINITSID_UNLABELED;
+
+ if (netlbl_sid == SECSID_NULL)
+ return 0;
switch (sksec->sclass) {
case SECCLASS_UDP_SOCKET:
- perm = UDP_SOCKET__RECVFROM;
+ recv_perm = UDP_SOCKET__RECVFROM;
break;
case SECCLASS_TCP_SOCKET:
- perm = TCP_SOCKET__RECVFROM;
+ recv_perm = TCP_SOCKET__RECVFROM;
break;
default:
- perm = RAWIP_SOCKET__RECVFROM;
+ recv_perm = RAWIP_SOCKET__RECVFROM;
}
- rc = avc_has_perm(sksec->sid, nlbl_sid, sksec->sclass, perm, ad);
+ rc = avc_has_perm(sksec->sid,
+ netlbl_sid,
+ sksec->sclass,
+ recv_perm,
+ ad);
if (rc == 0)
return 0;
- if (nlbl_sid != SECINITSID_UNLABELED)
- netlbl_skbuff_err(skb, rc);
+ netlbl_skbuff_err(skb, rc);
return rc;
}