Taehee Yoo 04b69426d8 hsr: fix slab-out-of-bounds Read in hsr_debugfs_rename() ... hsr slave interfaces don't have debugfs directory. So, hsr_debugfs_rename() shouldn't be called when hsr slave interface name is changed. Test commands: ip link add dummy0 type dummy ip link add dummy1 type dummy ip link add hsr0 type hsr slave1 dummy0 slave2 dummy1 ip link set dummy0 name ap Splat looks like: [21071.899367][T22666] ap: renamed from dummy0 [21071.914005][T22666] ================================================================== [21071.919008][T22666] BUG: KASAN: slab-out-of-bounds in hsr_debugfs_rename+0xaa/0xb0 [hsr] [21071.923640][T22666] Read of size 8 at addr ffff88805febcd98 by task ip/22666 [21071.926941][T22666] [21071.927750][T22666] CPU: 0 PID: 22666 Comm: ip Not tainted 5.5.0-rc2+ #240 [21071.929919][T22666] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [21071.935094][T22666] Call Trace: [21071.935867][T22666] dump_stack+0x96/0xdb [21071.936687][T22666] ? hsr_debugfs_rename+0xaa/0xb0 [hsr] [21071.937774][T22666] print_address_description.constprop.5+0x1be/0x360 [21071.939019][T22666] ? hsr_debugfs_rename+0xaa/0xb0 [hsr] [21071.940081][T22666] ? hsr_debugfs_rename+0xaa/0xb0 [hsr] [21071.940949][T22666] __kasan_report+0x12a/0x16f [21071.941758][T22666] ? hsr_debugfs_rename+0xaa/0xb0 [hsr] [21071.942674][T22666] kasan_report+0xe/0x20 [21071.943325][T22666] hsr_debugfs_rename+0xaa/0xb0 [hsr] [21071.944187][T22666] hsr_netdev_notify+0x1fe/0x9b0 [hsr] [21071.945052][T22666] ? __module_text_address+0x13/0x140 [21071.945897][T22666] notifier_call_chain+0x90/0x160 [21071.946743][T22666] dev_change_name+0x419/0x840 [21071.947496][T22666] ? __read_once_size_nocheck.constprop.6+0x10/0x10 [21071.948600][T22666] ? netdev_adjacent_rename_links+0x280/0x280 [21071.949577][T22666] ? __read_once_size_nocheck.constprop.6+0x10/0x10 [21071.950672][T22666] ? lock_downgrade+0x6e0/0x6e0 [21071.951345][T22666] ? do_setlink+0x811/0x2ef0 [21071.951991][T22666] do_setlink+0x811/0x2ef0 [21071.952613][T22666] ? is_bpf_text_address+0x81/0xe0 [ ... ] Reported-by: syzbot+9328206518f08318a5fd@syzkaller.appspotmail.com Fixes: 4c2d5e33dc ("hsr: rename debugfs file when interface name is changed") Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-12-30 20:36:27 -08:00
..
6lowpan	…
9p	…
802	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
8021q	…
appletalk	…
atm	…
ax25	…
batman-adv	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
bluetooth	compat_ioctl: remove most of fs/compat_ioctl.c	2019-12-01 13:46:15 -08:00
bpf	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
bpfilter	…
bridge	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf	2019-12-26 13:11:40 -08:00
caif	…
can	can: j1939: j1939_sk_bind(): take priv after lock is held	2019-12-08 11:52:02 +01:00
ceph	libceph, rbd, ceph: convert to use the new mount API	2019-11-27 22:28:37 +01:00
core	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-12-22 09:54:33 -08:00
dcb	…
dccp	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
decnet	net: add bool confirm_neigh parameter for dst_ops.update_pmtu	2019-12-24 22:28:54 -08:00
dns_resolver	…
dsa	net: dsa: ksz: use common define for tag len	2019-12-20 21:06:49 -08:00
ethernet	…
hsr	hsr: fix slab-out-of-bounds Read in hsr_debugfs_rename()	2019-12-30 20:36:27 -08:00
ieee802154	…
ife	…
ipv4	tcp: Fix highest_sack and highest_sack_seq	2019-12-30 20:28:39 -08:00
ipv6	sit: do not confirm neighbor when do pmtu update	2019-12-24 22:28:55 -08:00
iucv	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
kcm	…
key	…
l2tp	net: ipv6: add net argument to ip6_dst_lookup_flow	2019-12-04 12:27:12 -08:00
l3mdev	…
lapb	…
llc	llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c)	2019-12-20 21:19:36 -08:00
mac80211	mac80211: Turn AQL into an NL80211_EXT_FEATURE	2019-12-13 10:34:04 +01:00
mac802154	…
mpls	net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup	2019-12-04 12:27:13 -08:00
ncsi	…
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf	2019-12-26 13:11:40 -08:00
netlabel	…
netlink	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
netrom	…
nfc	net: nfc: nci: fix a possible sleep-in-atomic-context bug in nci_uart_tty_receive()	2019-12-18 11:57:33 -08:00
nsh	…
openvswitch	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
packet	af_packet: set defaule value for tmo	2019-12-09 14:30:19 -08:00
phonet	…
psample	net: psample: fix skb_over_panic	2019-11-26 14:40:13 -08:00
qrtr	…
rds	…
rfkill	rfkill: Fix incorrect check to avoid NULL pointer dereference	2019-12-16 10:15:49 +01:00
rose	…
rxrpc	RxRPC fixes	2019-12-24 16:12:47 -08:00
sched	net/sched: add delete_empty() to filters and use it in cls_flower	2019-12-30 20:35:19 -08:00
sctp	net: add bool confirm_neigh parameter for dst_ops.update_pmtu	2019-12-24 22:28:54 -08:00
smc	net/smc: unregister ib devices in reboot_event	2019-12-20 21:31:19 -08:00
strparser	…
sunrpc	This is a relatively quiet cycle for nfsd, mainly various bugfixes.	2019-12-07 16:56:00 -08:00
switchdev	…
tipc	tipc: fix use-after-free in tipc_disc_rcv()	2019-12-10 17:45:04 -08:00
tls	net/tls: Fix return values to avoid ENOTSUPP	2019-12-06 20:15:39 -08:00
unix	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
vmw_vsock	vsock/virtio: add WARN_ON check on virtio_transport_get_ops()	2019-12-16 16:07:12 -08:00
wimax	…
wireless	cfg80211: fix double-free after changing network namespace	2019-12-13 10:08:09 +01:00
x25	net/x25: add new state X25_STATE_5	2019-12-09 10:28:43 -08:00
xdp	xsk: Add rcu_read_lock around the XSK wakeup	2019-12-19 16:20:48 +01:00
xfrm	…
Kconfig	…
Makefile	…
compat.c	…
socket.c	io_uring-5.5-20191212	2019-12-13 14:24:54 -08:00
sysctl_net.c	…