Commit 4b14752e authored Dec 05, 2017 by Paul Moore

selinux: skip bounded transition processing if the policy isn't loaded



We can't do anything reasonable in security_bounded_transition() if we
don't have a policy loaded, and in fact we could run into problems
with some of the code inside expecting a policy.  Fix these problems
like we do many others in security/selinux/ss/services.c by checking
to see if the policy is loaded (ss_initialized) and returning quickly
if it isn't.

Reported-by: syzbot <syzkaller-bugs@googlegroups.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Reviewed-by: James Morris <james.l.morris@oracle.com>

parent ef28df55

security/selinux/ss/services.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -867,6 +867,9 @@ int security_bounded_transition(u32 old_sid, u32 new_sid)
		int index;
		int rc;

		if (!ss_initialized)
		return 0;

		read_lock(&policy_rwlock);

		rc = -EINVAL;