4.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Paul Moore <p...@paul-moore.com>
commit 4b14752ec4e0d87126e636384cf37c8dd9df157c upstream.
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-b...@googlegroups.com>
Signed-off-by: Paul Moore <p...@paul-moore.com>
Acked-by: Stephen Smalley <s...@tycho.nsa.gov>
Reviewed-by: James Morris <james.l.mor...@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
security/selinux/ss/services.c | 3 +++
1 file changed, 3 insertions(+)
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -867,6 +867,9 @@ int security_bounded_transition(u32 old_
int index;
int rc;
+ if (!ss_initialized)
+ return 0;
+
read_lock(&policy_rwlock);
rc = -EINVAL;
