Merge tag 'selinux-pr-20201214' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull selinux updates from Paul Moore:
 "While we have a small number of SELinux patches for v5.11, there are a
  few changes worth highlighting:

   - Change the LSM network hooks to pass flowi_common structs instead
     of the parent flowi struct as the LSMs do not currently need the
     full flowi struct and they do not have enough information to use it
     safely (missing information on the address family).

     This patch was discussed both with Herbert Xu (representing team
     netdev) and James Morris (representing team
     LSMs-other-than-SELinux).

   - Fix how we handle errors in inode_doinit_with_dentry() so that we
     attempt to properly label the inode on following lookups instead of
     continuing to treat it as unlabeled.

   - Tweak the kernel logic around allowx, auditallowx, and dontauditx
     SELinux policy statements such that the auditx/dontauditx are
     effective even without the allowx statement.

  Everything passes our test suite"

* tag 'selinux-pr-20201214' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  lsm,selinux: pass flowi_common instead of flowi to the LSM hooks
  selinux: Fix fall-through warnings for Clang
  selinux: drop super_block backpointer from superblock_security_struct
  selinux: fix inode_doinit_with_dentry() LABEL_INVALID error handling
  selinux: allow dontauditx and auditallowx rules to take effect without allowx
  selinux: fix error initialization in inode_doinit_with_dentry()

1 files changed, 7 insertions, 6 deletions

diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index 7314196185d1..c367d36965d4 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -175,9 +175,10 @@ int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
  */
 int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
 				      struct xfrm_policy *xp,
-				      const struct flowi *fl)
+				      const struct flowi_common *flic)
 {
 	u32 state_sid;
+	u32 flic_sid;
 
 	if (!xp->security)
 		if (x->security)
@@ -196,17 +197,17 @@ int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
 				return 0;
 
 	state_sid = x->security->ctx_sid;
+	flic_sid = flic->flowic_secid;
 
-	if (fl->flowi_secid != state_sid)
+	if (flic_sid != state_sid)
 		return 0;
 
 	/* We don't need a separate SA Vs. policy polmatch check since the SA
 	 * is now of the same label as the flow and a flow Vs. policy polmatch
 	 * check had already happened in selinux_xfrm_policy_lookup() above. */
-	return (avc_has_perm(&selinux_state,
-			     fl->flowi_secid, state_sid,
-			    SECCLASS_ASSOCIATION, ASSOCIATION__SENDTO,
-			    NULL) ? 0 : 1);
+	return (avc_has_perm(&selinux_state, flic_sid, state_sid,
+			     SECCLASS_ASSOCIATION, ASSOCIATION__SENDTO,
+			     NULL) ? 0 : 1);
 }
 
 static u32 selinux_xfrm_skb_sid_egress(struct sk_buff *skb)