Stephen Smalley 923190d32d selinux: fix inode security list corruption ... sb_finish_set_opts() can race with inode_free_security() when initializing inode security structures for inodes created prior to initial policy load or by the filesystem during ->mount(). This appears to have always been a possible race, but commit 3dc91d4 ("SELinux: Fix possible NULL pointer dereference in selinux_inode_permission()") made it more evident by immediately reusing the unioned list/rcu element of the inode security structure for call_rcu() upon an inode_free_security(). But the underlying issue was already present before that commit as a possible use-after-free of isec. Shivnandan Kumar reported the list corruption and proposed a patch to split the list and rcu elements out of the union as separate fields of the inode_security_struct so that setting the rcu element would not affect the list element. However, this would merely hide the issue and not truly fix the code. This patch instead moves up the deletion of the list entry prior to dropping the sbsec->isec_lock initially. Then, if the inode is dropped subsequently, there will be no further references to the isec. Reported-by: Shivnandan Kumar <shivnandan.k@samsung.com> Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Cc: stable@vger.kernel.org Signed-off-by: Paul Moore <pmoore@redhat.com>		2014-10-15 10:37:02 -04:00
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apparmor	nick kvfree() from apparmor	2014-05-06 14:02:53 -04:00
integrity	ima: introduce ima_kernel_read()	2014-06-12 17:58:08 -04:00
keys	Merge branch 'serge-next-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sergeh/linux-security	2014-06-10 10:05:36 -07:00
selinux	selinux: fix inode security list corruption	2014-10-15 10:37:02 -04:00
smack	Linux 3.16	2014-08-05 15:44:22 -04:00
tomoyo	get rid of pointless checks for NULL ->i_op	2014-04-01 23:19:16 -04:00
yama	yama: Better permission check for ptraceme	2013-03-26 13:17:58 -07:00
capability.c	Merge tag 'keys-20140314' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs into next	2014-04-14 11:42:49 +10:00
commoncap.c	capabilities: allow nice if we are privileged	2013-08-30 23:44:09 -07:00
device_cgroup.c	device_cgroup: use css_has_online_children() instead of has_children()	2014-05-16 13:22:52 -04:00
inode.c	securityfs: fix object creation races	2012-01-10 10:20:35 -05:00
Kconfig	security: select correct default LSM_MMAP_MIN_ADDR on arm on arm64	2014-02-05 14:59:14 +00:00
lsm_audit.c	audit: anchor all pid references in the initial pid namespace	2014-03-20 10:11:55 -04:00
Makefile	security: cleanup Makefiles to use standard syntax for specifying sub-directories	2014-02-17 11:08:04 +11:00
min_addr.c	mmap_min_addr check CAP_SYS_RAWIO only for write	2010-04-23 08:56:31 +10:00
security.c	Merge branch 'serge-next-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sergeh/linux-security	2014-06-10 10:05:36 -07:00