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authorPaul Moore <paul@paul-moore.com>2017-12-05 17:17:43 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-02-25 11:05:42 +0100
commit5e6f51aac15ac93605187fd11b9bc75a240a53f8 (patch)
tree16ec4e5e156a784b8df3a2426de35107974b2548
parentfe1cb580e84865f3c6be99b952a626323228e781 (diff)
selinux: skip bounded transition processing if the policy isn't loaded
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@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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--security/selinux/ss/services.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index a2aeb1c99667..73275a92f2e2 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -854,6 +854,9 @@ 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;