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Eric Biggers f7b48cf08f KEYS: don't revoke uninstantiated key in request_key_auth_new() 
If key_instantiate_and_link() were to fail (which fortunately isn't
possible currently), the call to key_revoke(authkey) would crash with a
NULL pointer dereference in request_key_auth_revoke() because the key
has not yet been instantiated.

Fix this by removing the call to key_revoke().  key_put() is sufficient,
as it's not possible for an uninstantiated authkey to have been used for
anything yet.

Fixes: b5f545c880 ("[PATCH] keys: Permit running process to instantiate keys")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2017-09-25 15:19:56 +01:00
..
apparmor apparmor: Refactor to remove bprm_secureexec hook 2017-08-01 12:03:06 -07:00
integrity Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2017-07-05 11:26:35 -07:00
keys KEYS: don't revoke uninstantiated key in request_key_auth_new() 2017-09-25 15:19:56 +01:00
loadpin security: mark LSM hooks as __ro_after_init 2017-03-06 11:00:15 +11:00
selinux selinux/stable-4.14 PR 20170831 2017-09-12 13:21:00 -07:00
smack This series has the ultimate goal of providing a sane stack rlimit when 2017-09-07 20:35:29 -07:00
tomoyo exec: Rename bprm->cred_prepared to called_set_creds 2017-08-01 12:02:48 -07:00
yama doc: ReSTify Yama.txt 2017-05-18 10:33:04 -06:00
commoncap.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2017-09-11 18:34:47 -07:00
device_cgroup.c security/device_cgroup: Fix RCU_LOCKDEP_WARN() condition 2015-09-03 18:13:10 -07:00
inode.c securityfs: add the ability to support symlinks 2017-06-08 12:51:43 -07:00
Kconfig include/linux/string.h: add the option of fortified string.h functions 2017-07-12 16:26:03 -07:00
lsm_audit.c lsm_audit: update my email address 2017-08-17 15:33:39 -04:00
Makefile LSM: LoadPin for kernel file loading restrictions 2016-04-21 10:47:27 +10:00
min_addr.c
security.c selinux/stable-4.14 PR 20170831 2017-09-12 13:21:00 -07:00