audit/stable-4.13 PR 20170816

-----BEGIN PGP SIGNATURE-----
 
 iQJIBAABCAAyFiEEcQCq365ubpQNLgrWVeRaWujKfIoFAlmUlmUUHHBhdWxAcGF1
 bC1tb29yZS5jb20ACgkQVeRaWujKfIo92hAAqbffYKqih+3VPCYg0bx7N9pCl8Ya
 k9RNxyRPv9+IxJGTrnG00x6k8GIv3hjyJIYmqGQl/GWdbZadmySazl20YI9ls47p
 7ydJAJELRPnfKFLJ9T2mqi6Az8qDtRoV2DwLCSCnsBCJdsK4wcUxtM3/qV2JGxzJ
 O2YIw4C4kuoM2SRl6weGnCUTVkdaDdHk6GcC2GClIlsjapUpNB+UieGijN/3HqHi
 YpSofAXD1lkZ4DZCM51t/3vuIlNTGSQOVvXqsVZWJv4fFR1qZbGiYuVQervYaaP2
 sRN+2OwNtdy5yUStQ5BMHT44zTc49ACizSqU3j96yzEa5H3IfMSN9U5Aa+GYIy5N
 um6qeUz7wKOto0/hBtDpabGeeBkdLZBY6L7Dt2NLTcC8vT65b8NveGj4rvVGt0b5
 REjoT0Slja4yQeER3IgUByR5H6h983Em/cjDmL6V/oLqxfOGGLkLQgKyfGoF+aSK
 DrpCWS/XiGU/Q2W3XhLSSIlJXbZ6y/dttM4tFOrk6omekLpdzdJwgo8DRz91dIZI
 vB5DAHG+Pvxw6sYFz2eAF2/3UYeEdxhAsQs8V3NJWz+7BD/AxAdfMDriGQnQ6jfU
 NIWRcCxkU/FtrqsznIqp0BkitOQ7ZwDqusUebWl34y8iNa/m2f9Jp+rvSnxq8+Zu
 Zw0EjuRyfwu2SE0=
 =tP6Y
 -----END PGP SIGNATURE-----

Merge tag 'audit-pr-20170816' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit fixes from Paul Moore:
 "Two small fixes to the audit code, both explained well in the
  respective patch descriptions, but the quick summary is one
  use-after-free fix, and one silly fanotify notification flag fix"

* tag 'audit-pr-20170816' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: Receive unmount event
  audit: Fix use after free in audit_remove_watch_rule()
This commit is contained in:
Linus Torvalds 2017-08-16 16:48:34 -07:00
commit 422ce075f9

View File

@ -66,7 +66,7 @@ static struct fsnotify_group *audit_watch_group;
/* fsnotify events we care about. */
#define AUDIT_FS_WATCH (FS_MOVE | FS_CREATE | FS_DELETE | FS_DELETE_SELF |\
FS_MOVE_SELF | FS_EVENT_ON_CHILD)
FS_MOVE_SELF | FS_EVENT_ON_CHILD | FS_UNMOUNT)
static void audit_free_parent(struct audit_parent *parent)
{
@ -457,13 +457,15 @@ void audit_remove_watch_rule(struct audit_krule *krule)
list_del(&krule->rlist);
if (list_empty(&watch->rules)) {
/*
* audit_remove_watch() drops our reference to 'parent' which
* can get freed. Grab our own reference to be safe.
*/
audit_get_parent(parent);
audit_remove_watch(watch);
if (list_empty(&parent->watches)) {
audit_get_parent(parent);
if (list_empty(&parent->watches))
fsnotify_destroy_mark(&parent->mark, audit_watch_group);
audit_put_parent(parent);
}
audit_put_parent(parent);
}
}