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authorPaul Moore <paul@paul-moore.com>2017-12-06 01:17:43 +0300
committerPaul Moore <paul@paul-moore.com>2017-12-06 01:17:43 +0300
commit4b14752ec4e0d87126e636384cf37c8dd9df157c (patch)
tree9811c34d3e0d68b05f87e4069e911bee1ba32ce2 /security
parentef28df55ac27e1e5cd122e19fa311d886d47a756 (diff)
downloadlinux-4b14752ec4e0d87126e636384cf37c8dd9df157c.tar.xz
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>
Diffstat (limited to 'security')
-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 d05496deb229..8900ea5cbabf 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -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;