4.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul Moore <paul@xxxxxxxxxxxxxx> 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-bugs@xxxxxxxxxxxxxxxx> Signed-off-by: Paul Moore <paul@xxxxxxxxxxxxxx> Acked-by: Stephen Smalley <sds@xxxxxxxxxxxxx> Reviewed-by: James Morris <james.l.morris@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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;