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YueHaibing 39de8cc367 appletalk: Fix potential NULL pointer dereference in unregister_snap_client 
commit 9804501fa1228048857910a6bf23e085aade37cc upstream.

register_snap_client may return NULL, all the callers
check it, but only print a warning. This will result in
NULL pointer dereference in unregister_snap_client and other
places.

It has always been used like this since v2.6

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to <4.15: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17 20:38:59 +01:00
..
6lowpan
6lowpan: iphc: reset mac_header after decompress to fix panic
2018-10-03 17:00:47 -07:00
9p
9p/virtio: Add cleanup path in p9_virtio_init
2019-07-31 07:28:39 +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
vlan: disable SIOCSHWTSTAMP in container
2019-05-16 19:42:34 +02:00
appletalk
appletalk: Fix potential NULL pointer dereference in unregister_snap_client
2019-12-17 20:38:59 +01:00
atm
net: use skb_queue_empty_lockless() in poll() handlers
2019-11-10 11:25:34 +01:00
ax25
ax25: enforce CAP_NET_RAW for raw sockets
2019-10-05 12:47:43 +02:00
batman-adv
batman-adv: Only read OGM2 tvlv_len after buffer len check
2019-09-21 07:15:35 +02:00
bluetooth
Bluetooth: L2CAP: Detect if remote is not able to use the whole MPS
2019-11-20 18:00:46 +01:00
bpf
…
bridge
bridge: ebtables: don't crash when using dnat target in output chains
2019-12-05 15:36:56 +01:00
caif
net: use skb_queue_empty_lockless() in poll() handlers
2019-11-10 11:25:34 +01:00
can
can: af_can: Fix error path of can_init()
2019-07-21 09:04:22 +02:00
ceph
libceph: fix PG split vs OSD (re)connect race
2019-08-29 08:26:42 +02:00
core
net: fix possible overflow in __sk_mem_raise_allocated()
2019-12-05 15:37:58 +01:00
dcb
net: dcb: For wild-card lookups, use priority -1, not 0
2018-09-19 22:43:43 +02:00
dccp
inet: stop leaking jiffies on the wire
2019-11-10 11:25:37 +01:00
decnet
decnet: fix DN_IFREQ_SIZE
2019-12-05 15:37:56 +01:00
dns_resolver
KEYS: DNS: fix parsing multiple options
2018-07-22 14:28:49 +02:00
dsa
net: dsa: fix switch tree list
2019-11-10 11:25:32 +01:00
ethernet
…
hsr
net/hsr: fix possible crash in add_timer()
2019-03-19 13:13:22 +01:00
ieee802154
ieee802154: enforce CAP_NET_RAW for raw sockets
2019-10-05 12:47:44 +02:00
ife
net: sched: ife: check on metadata length
2018-04-29 11:33:13 +02:00
ipv4
tcp: exit if nothing to retransmit on RTO timeout
2019-12-17 20:38:43 +01:00
ipv6
ipv6: Fix handling of LLA with VRF and sockets bound to VRF
2019-12-01 09:14:14 +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: switch order of device registration to fix a crash
2019-04-17 08:37:45 +02:00
key
xfrm: clean up xfrm protocol checks
2019-09-16 08:20:44 +02:00
l2tp
compat_ioctl: pppoe: fix PPPOEIOCSFWD handling
2019-08-09 17:53:35 +02:00
l3mdev
…
lapb
lapb: fixed leak of control-blocks.
2019-06-22 08:16:14 +02:00
llc
llc: avoid blocking in llc_sap_close()
2019-11-20 17:59:59 +01:00
mac80211
mac80211: fix station inactive_time shortly after boot
2019-12-05 15:37:06 +01:00
mac802154
net: mac802154: tx: expand tailroom if necessary
2018-09-09 19:55:52 +02:00
mpls
mpls: Return error for RTA_GATEWAY attribute
2019-03-13 14:03:09 -07:00
ncsi
net/ncsi: Fix length of GVI response packet
2017-10-21 01:56:38 +01:00
netfilter
netfilter: nft_compat: do not dump private area
2019-11-24 08:23:32 +01:00
netlabel
netlabel: fix out-of-bounds memory accesses
2019-03-13 14:03:08 -07:00
netlink
genetlink: Fix a memory leak on error path
2019-04-03 06:25:08 +02:00
netrom
netrom: hold sock when setting skb->destructor
2019-07-31 07:28:46 +02:00
nfc
nfc: netlink: fix double device reference drop
2019-11-12 19:17:54 +01:00
nsh
nsh: set mac len based on inner packet
2018-07-22 14:28:49 +02:00
openvswitch
openvswitch: remove another BUG_ON()
2019-12-05 15:38:17 +01:00
packet
net/packet: fix race in tpacket_snd()
2019-08-25 10:50:26 +02:00
phonet
net: use skb_queue_empty_lockless() in poll() handlers
2019-11-10 11:25:34 +01:00
psample
net: psample: fix skb_over_panic
2019-12-05 15:38:15 +01:00
qrtr
net: qrtr: Stop rx_worker before freeing node
2019-10-05 12:47:40 +02:00
rds
net/rds: Fix error handling in rds_ib_add_one()
2019-10-07 18:55:20 +02:00
rfkill
rfkill: gpio: fix memory leak in probe error path
2018-05-16 10:10:26 +02:00
rose
net/rose: fix unbound loop in rose_loopback_timer()
2019-05-02 09:40:34 +02:00
rxrpc
rxrpc: Fix call ref leak
2019-11-06 12:43:37 +01:00
sched
net: sched: fix tc -s class show no bstats on class with nolock subqueues
2019-12-05 15:38:19 +01:00
sctp
sctp: cache netns in sctp_ep_common
2019-12-05 15:38:18 +01:00
smc
net/smc: use after free fix in smc_wr_tx_put_slot()
2019-12-17 20:38:01 +01:00
strparser
strparser: Remove early eaten to fix full tcp receive buffer stall
2018-07-22 14:28:47 +02:00
sunrpc
sunrpc: safely reallow resvport min/max inversion
2019-12-01 09:13:42 +01:00
switchdev
net: switchdev: Remove bridge bypass support from switchdev
2017-08-07 14:48:48 -07:00
tipc
tipc: fix link name length check
2019-12-05 15:38:18 +01:00
tls
net/tls: Fixed return value when tls_complete_pending_work() fails
2018-12-05 19:41:11 +01:00
unix
net: fix warning in af_unix
2019-12-01 09:13:35 +01:00
vmw_vsock
VSOCK: bind to random port for VMADDR_PORT_ANY
2019-12-05 15:37:24 +01:00
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: call disconnect_wk when AP stops
2019-12-01 09:14:15 +01:00
x25
net/x25: fix null_x25_address handling
2019-12-17 20:38:25 +01:00
xfrm
xfrm: release device reference for invalid state
2019-12-17 20:37:28 +01:00
compat.c
sock: Make sock->sk_stamp thread-safe
2019-01-09 17:14:46 +01:00
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
bpf: get rid of pure_initcall dependency to enable jits
2019-08-25 10:50:02 +02:00
sysctl_net.c
…