linux/security
Eric Biggers 8f674565d4 KEYS: reset parent each time before searching key_user_tree
In key_user_lookup(), if there is no key_user for the given uid, we drop
key_user_lock, allocate a new key_user, and search the tree again.  But
we failed to set 'parent' to NULL at the beginning of the second search.
If the tree were to be empty for the second search, the insertion would
be done with an invalid 'parent', scribbling over freed memory.

Fortunately this can't actually happen currently because the tree always
contains at least the root_key_user.  But it still should be fixed to
make the code more robust.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2017-09-25 15:19:57 +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: reset parent each time before searching key_user_tree 2017-09-25 15:19:57 +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