If request_key() is used to find a keyring, only do the search part - don't
do the construction part if the keyring was not found by the search. We
don't really want keyrings in the negative instantiated state since the
rejected/negative instantiation error value in the payload is unioned with
keyring metadata.
Now the kernel gives an error:
request_key("keyring", "#selinux,bdekeyring", "keyring", KEY_SPEC_USER_SESSION_KEYRING) = -1 EPERM (Operation not permitted)
Signed-off-by: David Howells <dhowells@redhat.com>
CVE-2015-7872
Signed-off-by: Kevin F. Haggerty <haggertk@lineageos.org>
Change-Id: I3603fec8fab929d7636d7223901f16dc8d8026cc
d587946ff0