linux-stable/security/selinux
Ondrej Mosnacek 6a1afffb08 selinux: fix NULL dereference in policydb_destroy()
The conversion to kvmalloc() forgot to account for the possibility that
p->type_attr_map_array might be null in policydb_destroy().

Fix this by destroying its contents only if it is not NULL.

Also make sure ebitmap_init() is called on all entries before
policydb_destroy() can be called. Right now this is a no-op, because
both kvcalloc() and ebitmap_init() just zero out the whole struct, but
let's rather not rely on a specific implementation.

Reported-by: syzbot+a57b2aff60832666fc28@syzkaller.appspotmail.com
Fixes: acdf52d97f ("selinux: convert to kvmalloc")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2019-03-18 12:19:48 -04:00
..
include Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
ss selinux: fix NULL dereference in policydb_destroy() 2019-03-18 12:19:48 -04:00
.gitignore
avc.c selinux: fix avc audit messages 2019-02-05 12:34:33 -05:00
hooks.c selinux/stable-5.1 PR 20190312 2019-03-13 11:10:42 -07:00
ibpkey.c selinux: wrap global selinux state 2018-03-01 18:48:02 -05:00
Kconfig selinux: Remove SECURITY_SELINUX_BOOTPARAM_VALUE 2019-01-08 13:18:43 -08:00
Makefile SELinux: Remove unused selinux_is_enabled 2019-01-08 13:18:44 -08:00
netif.c selinux: Cleanup printk logging in netif 2018-06-19 13:45:31 -04:00
netlabel.c selinux: wrap AVC state 2018-03-20 16:58:17 -04:00
netlink.c selinux: Cleanup printk logging in netlink 2018-06-19 13:33:05 -04:00
netnode.c selinux: Cleanup printk logging in netnode 2018-06-19 13:49:10 -04:00
netport.c selinux: Cleanup printk logging in netport 2018-06-19 13:43:01 -04:00
nlmsgtab.c selinux: add support for RTM_NEWCHAIN, RTM_DELCHAIN, and RTM_GETCHAIN 2018-11-29 11:32:02 -05:00
selinuxfs.c SELinux: Abstract use of inode security blob 2019-01-08 13:18:44 -08:00
xfrm.c SELinux: Abstract use of cred security blob 2019-01-08 13:18:44 -08:00