WSL2-Linux-Kernel/security
Tejun Heo 201e72acb2 device_cgroup: fix RCU usage
dev_cgroup->exceptions is protected with devcgroup_mutex for writes
and RCU for reads; however, RCU usage isn't correct.

* dev_exception_clean() doesn't use RCU variant of list_del() and
  kfree().  The function can race with may_access() and may_access()
  may end up dereferencing already freed memory.  Use list_del_rcu()
  and kfree_rcu() instead.

* may_access() may be called only with RCU read locked but doesn't use
  RCU safe traversal over ->exceptions.  Use list_for_each_entry_rcu().

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
Cc: stable@vger.kernel.org
Cc: Aristeu Rozanski <aris@redhat.com>
Cc: Li Zefan <lizefan@huawei.com>
2012-11-06 12:25:51 -08:00
..
apparmor apparmor: fix IRQ stack overflow during free_profile 2012-10-25 02:12:50 +11:00
integrity ima: fix bug in argument order 2012-10-05 22:32:16 +10:00
keys Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
selinux fix a leak in replace_fd() users 2012-10-16 13:36:50 -04:00
smack consitify do_mount() arguments 2012-10-11 20:02:04 -04:00
tomoyo consitify do_mount() arguments 2012-10-11 20:02:04 -04:00
yama Linux 3.6-rc7 2012-09-28 13:37:32 +10:00
Kconfig KEYS: Move the key config into security/keys/Kconfig 2012-05-11 10:56:56 +01:00
Makefile security: Yama LSM 2012-02-10 09:18:52 +11:00
capability.c consitify do_mount() arguments 2012-10-11 20:02:04 -04:00
commoncap.c split ->file_mmap() into ->mmap_addr()/->mmap_file() 2012-05-31 13:11:54 -04:00
device_cgroup.c device_cgroup: fix RCU usage 2012-11-06 12:25:51 -08:00
inode.c securityfs: fix object creation races 2012-01-10 10:20:35 -05:00
lsm_audit.c LSM: BUILD_BUG_ON if the common_audit_data union ever grows 2012-04-09 12:23:03 -04:00
min_addr.c mmap_min_addr check CAP_SYS_RAWIO only for write 2010-04-23 08:56:31 +10:00
security.c consitify do_mount() arguments 2012-10-11 20:02:04 -04:00