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492a81318e
linux/net
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Yu Zhao 492a81318e cfg80211: fix use-after-free in reg_process_hint() 
[ Upstream commit 1db5852945 ]

reg_process_hint_country_ie() can free regulatory_request and return
REG_REQ_ALREADY_SET. We shouldn't use regulatory_request after it's
called. KASAN error was observed when this happens.

BUG: KASAN: use-after-free in reg_process_hint+0x839/0x8aa [cfg80211]
Read of size 4 at addr ffff8800c430d434 by task kworker/1:3/89
<snipped>
Workqueue: events reg_todo [cfg80211]
Call Trace:
 dump_stack+0xc1/0x10c
 ? _atomic_dec_and_lock+0x1ad/0x1ad
 ? _raw_spin_lock_irqsave+0xa0/0xd2
 print_address_description+0x86/0x26f
 ? reg_process_hint+0x839/0x8aa [cfg80211]
 kasan_report+0x241/0x29b
 reg_process_hint+0x839/0x8aa [cfg80211]
 reg_todo+0x204/0x5b9 [cfg80211]
 process_one_work+0x55f/0x8d0
 ? worker_detach_from_pool+0x1b5/0x1b5
 ? _raw_spin_unlock_irq+0x65/0xdd
 ? _raw_spin_unlock_irqrestore+0xf3/0xf3
 worker_thread+0x5dd/0x841
 ? kthread_parkme+0x1d/0x1d
 kthread+0x270/0x285
 ? pr_cont_work+0xe3/0xe3
 ? rcu_read_unlock_sched_notrace+0xca/0xca
 ret_from_fork+0x22/0x40

Allocated by task 2718:
 set_track+0x63/0xfa
 __kmalloc+0x119/0x1ac
 regulatory_hint_country_ie+0x38/0x329 [cfg80211]
 __cfg80211_connect_result+0x854/0xadd [cfg80211]
 cfg80211_rx_assoc_resp+0x3bc/0x4f0 [cfg80211]
smsc95xx v1.0.6
 ieee80211_sta_rx_queued_mgmt+0x1803/0x7ed5 [mac80211]
 ieee80211_iface_work+0x411/0x696 [mac80211]
 process_one_work+0x55f/0x8d0
 worker_thread+0x5dd/0x841
 kthread+0x270/0x285
 ret_from_fork+0x22/0x40

Freed by task 89:
 set_track+0x63/0xfa
 kasan_slab_free+0x6a/0x87
 kfree+0xdc/0x470
 reg_process_hint+0x31e/0x8aa [cfg80211]
 reg_todo+0x204/0x5b9 [cfg80211]
 process_one_work+0x55f/0x8d0
 worker_thread+0x5dd/0x841
 kthread+0x270/0x285
 ret_from_fork+0x22/0x40
<snipped>

Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2018-11-04 14:52:40 +01:00
..
6lowpan 6lowpan: iphc: reset mac_header after decompress to fix panic 2018-10-03 17:00:47 -07:00
9p net/9p: fix error path of p9_virtio_probe 2018-09-15 09:45:29 +02:00
802 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
8021q net: fix use-after-free in GRO with ESP 2018-07-22 14:28:44 +02:00
appletalk License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atm atm: Preserve value of skb->truesize when accounting to vcc 2018-07-22 14:28:43 +02:00
ax25 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
batman-adv batman-adv: fix hardif_neigh refcount on queue_work() failure 2018-10-20 09:48:49 +02:00
bluetooth Bluetooth: SMP: fix crash in unpairing 2018-11-04 14:52:39 +01:00
bpf
bridge netfilter: bridge: Don't sabotage nf_hook calls from an l3mdev 2018-11-04 14:52:38 +01:00
caif net: caif: Add a missing rcu_read_unlock() in caif_flow_cb 2018-09-05 09:26:27 +02:00
can can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once 2018-01-23 19:58:17 +01:00
ceph libceph, ceph: avoid memory leak when specifying same option several times 2018-05-30 07:52:04 +02:00
core net-ethtool: ETHTOOL_GUFO did not and should not require CAP_NET_ADMIN 2018-10-18 09:16:20 +02:00
dcb net: dcb: For wild-card lookups, use priority -1, not 0 2018-09-19 22:43:43 +02:00
dccp inet: make sure to grab rcu_read_lock before using ireq->ireq_opt 2018-10-18 09:16:21 +02:00
decnet dn_getsockoptdecnet: move nf_{get/set}sockopt outside sock lock 2018-02-25 11:07:52 +01:00
dns_resolver KEYS: DNS: fix parsing multiple options 2018-07-22 14:28:49 +02:00
dsa net: dsa: Do not suspend/resume closed slave_dev 2018-08-06 16:20:48 +02:00
ethernet networking: make skb_push & __skb_push return void pointers 2017-06-16 11:48:40 -04:00
hsr net/hsr: Check skb_put_padto() return value 2017-08-22 13:40:23 -07:00
ieee802154 inet: frags: fix ip6frag_low_thresh boundary 2018-09-19 22:43:47 +02:00
ife net: sched: ife: check on metadata length 2018-04-29 11:33:13 +02:00
ipv4 xfrm: reset transport header back to network header after all input transforms ahave been applied 2018-11-04 14:52:37 +01:00
ipv6 xfrm: reset transport header back to network header after all input transforms ahave been applied 2018-11-04 14:52:37 +01:00
ipx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iucv net/iucv: Free memory obtained by kzalloc 2018-03-31 18:10:41 +02:00
kcm kcm: Fix use-after-free caused by clonned sockets 2018-06-11 22:49:19 +02:00
key af_key: Always verify length of provided sadb_key 2018-06-16 09:45:14 +02:00
l2tp l2tp: use sk_dst_check() to avoid race on sk->sk_dst_cache 2018-08-22 07:46:08 +02:00
l3mdev
lapb net, lapb: convert lapb_cb.refcnt from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
llc llc: use refcount_inc_not_zero() for llc_sap_find() 2018-08-22 07:46:08 +02:00
mac80211 mac80211: fix TX status reporting for ieee80211s 2018-11-04 14:52:37 +01:00
mac802154 net: mac802154: tx: expand tailroom if necessary 2018-09-09 19:55:52 +02:00
mpls mpls, nospec: Sanitize array index in mpls_label_ok() 2018-02-22 15:42:28 +01:00
ncsi net/ncsi: Fix length of GVI response packet 2017-10-21 01:56:38 +01:00
netfilter netfilter: nf_tables: release chain in flushing set 2018-10-10 08:54:23 +02:00
netlabel netlabel: check for IPV4MASK in addrinfo_get 2018-10-18 09:16:18 +02:00
netlink netlink: Don't shift on 64 for ngroups 2018-08-09 12:16:38 +02:00
netrom net, netrom: convert nr_node.refcount from atomic_t to refcount_t 2017-07-04 22:35:17 +01:00
nfc NFC: Fix possible memory corruption when handling SHDLC I-Frame commands 2018-09-29 03:06:01 -07:00
nsh nsh: set mac len based on inner packet 2018-07-22 14:28:49 +02:00
openvswitch openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found 2018-05-19 10:20:24 +02:00
packet net/packet: fix packet drop as of virtio gso 2018-10-18 09:16:19 +02:00
phonet License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
psample MAINTAINERS: Update Yotam's E-mail 2017-11-01 12:19:03 +09:00
qrtr net: qrtr: Broadcast messages only from control port 2018-08-24 13:09:13 +02:00
rds rds: rds_ib_recv_alloc_cache() should call alloc_percpu_gfp() instead 2018-10-13 09:27:29 +02:00
rfkill rfkill: gpio: fix memory leak in probe error path 2018-05-16 10:10:26 +02:00
rose
rxrpc rxrpc: Fix user call ID check in rxrpc_service_prealloc_one 2018-08-06 16:20:48 +02:00
sched net: sched: Add policy validation for tc attributes 2018-10-18 09:16:18 +02:00
sctp sctp: update dst pmtu with the correct daddr 2018-10-18 09:16:19 +02:00
smc net/smc: no shutdown in state SMC_LISTEN 2018-08-24 13:09:22 +02:00
strparser strparser: Remove early eaten to fix full tcp receive buffer stall 2018-07-22 14:28:47 +02:00
sunrpc sunrpc: Don't use stack buffer with scatterlist 2018-09-15 09:45:26 +02:00
switchdev net: switchdev: Remove bridge bypass support from switchdev 2017-08-07 14:48:48 -07:00
tipc tipc: fix flow control accounting for implicit connect 2018-10-18 09:16:19 +02:00
tls tls: possible hang when do_tcp_sendpages hits sndbuf is full case 2018-10-03 17:00:58 -07:00
unix License cleanup: add SPDX license identifiers to some files 2017-11-02 10:04:46 -07:00
vmw_vsock vsock: split dwork to avoid reinitializations 2018-08-22 07:46:08 +02:00
wimax License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wireless cfg80211: fix use-after-free in reg_process_hint() 2018-11-04 14:52:40 +01:00
x25 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfrm xfrm: validate template mode 2018-11-04 14:52:38 +01:00
compat.c net: support compat 64-bit time in {s,g}etsockopt 2018-05-19 10:20:24 +02:00
Kconfig net: Remove CONFIG_NETFILTER_DEBUG and _ASSERT() macros. 2017-09-04 13:25:20 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
socket.c net: socket: fix potential spectre v1 gadget in socketcall 2018-08-06 16:20:48 +02:00
sysctl_net.c