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Cong Wang 8c1374509e netfilter: xt_hashlimit: limit the max size of hashtable 
commit 8d0015a7ab76b8b1e89a3e5f5710a6e5103f2dd5 upstream.

The user-specified hashtable size is unbound, this could
easily lead to an OOM or a hung task as we hold the global
mutex while allocating and initializing the new hashtable.

Add a max value to cap both cfg->size and cfg->max, as
suggested by Florian.

Reported-and-tested-by: syzbot+adf6c6c2be1c3a718121@syzkaller.appspotmail.com
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-28 15:42:56 +01:00
..
6lowpan
6lowpan: Off by one handling ->nexthdr
2020-01-29 10:24:22 +01:00
9p
9p/virtio: Add cleanup path in p9_virtio_init
2019-08-04 09:33:28 +02:00
802
…
8021q
vlan: fix memory leak in vlan_dev_set_egress_priority
2020-01-12 11:24:27 +01:00
appletalk
appletalk: Set error code if register_snap_client failed
2019-12-21 10:41:45 +01:00
atm
net: atm: Fix potential Spectre v1 vulnerabilities
2019-04-27 09:34:40 +02:00
ax25
ax25: enforce CAP_NET_RAW for raw sockets
2019-10-05 12:30:15 +02:00
batman-adv
batman-adv: Fix DAT candidate selection on little endian systems
2020-01-23 08:19:41 +01:00
bluetooth
Bluetooth: Fix race condition in hci_release_sock()
2020-02-05 13:05:47 +00:00
bridge
netfilter: ebtables: CONFIG_COMPAT: reject trailing data after last rule
2020-01-29 10:24:24 +01:00
caif
caif: reduce stack size with KASAN
2019-05-08 07:19:07 +02:00
can
can: purge socket error queue on sock destruct
2019-07-10 09:55:33 +02:00
ceph
libceph: use kbasename() and kill ceph_file_part()
2019-08-11 12:22:15 +02:00
core
net: Fix skb->csum update in inet_proto_csum_replace16().
2020-02-05 13:05:56 +00:00
dcb
net: dcb: For wild-card lookups, use priority -1, not 0
2018-09-19 22:47:15 +02:00
dccp
dccp: Fix memleak in __feat_register_sp
2020-01-23 08:19:34 +01:00
decnet
decnet: fix DN_IFREQ_SIZE
2019-12-05 15:35:12 +01:00
dns_resolver
KEYS: DNS: fix parsing multiple options
2018-07-22 14:27:39 +02:00
dsa
net: dsa: tag_qca: fix doubled Tx statistics
2020-01-23 08:19:41 +01:00
ethernet
net: add annotations on hh->hh_len lockless accesses
2020-01-12 11:24:19 +01:00
hsr
net: hsr: fix possible NULL deref in hsr_handle_frame()
2020-02-14 16:30:58 -05:00
ieee802154
inet: frags: call inet_frags_fini() after unregister_pernet_subsys()
2020-01-29 10:24:25 +01:00
ipv4
tcp: clear tp->segs_{in|out} in tcp_disconnect()
2020-02-14 16:30:59 -05:00
ipv6
vti[6]: fix packet tx through bpf_redirect()
2020-02-05 13:05:51 +00:00
ipx
ipx: call ipxitf_put() in ioctl error path
2017-05-25 15:44:41 +02:00
irda
irda: Only insert new objects into the global database via setsockopt
2018-09-15 09:43:01 +02:00
iucv
net/af_iucv: always register net_device notifier
2020-01-29 10:24:26 +01:00
kcm
kcm: switch order of device registration to fix a crash
2019-04-17 08:36:44 +02:00
key
xfrm: clean up xfrm protocol checks
2019-09-16 08:19:32 +02:00
l2tp
l2tp: Fix possible NULL pointer dereference
2020-01-29 10:24:23 +01:00
l3mdev
net: ipv6: Remove l3mdev_get_saddr6
2016-09-10 23:12:53 -07:00
lapb
lapb: fixed leak of control-blocks.
2019-06-22 08:17:22 +02:00
llc
llc: fix sk_buff refcounting in llc_conn_state_process()
2020-01-29 10:24:33 +01:00
mac80211
mac80211: Fix TKIP replay protection immediately after key setup
2020-02-05 13:05:50 +00:00
mac802154
net: mac802154: tx: expand tailroom if necessary
2018-09-09 20:01:19 +02:00
mpls
mpls, nospec: Sanitize array index in mpls_label_ok()
2018-03-11 16:21:34 +01:00
ncsi
net/ncsi: Improve HNCDSC AEN handler
2016-10-20 11:23:08 -04:00
netfilter
netfilter: xt_hashlimit: limit the max size of hashtable
2020-02-28 15:42:56 +01:00
netlabel
netlabel: fix out-of-bounds memory accesses
2019-03-13 14:04:53 -07:00
netlink
netlink: Don't shift on 64 for ngroups
2018-08-09 12:17:59 +02:00
netrom
netrom: hold sock when setting skb->destructor
2019-08-04 09:33:35 +02:00
nfc
net: nfc: nci: fix a possible sleep-in-atomic-context bug in nci_uart_tty_receive()
2020-01-04 13:40:16 +01:00
openvswitch
openvswitch: support asymmetric conntrack
2019-12-21 10:42:23 +01:00
packet
packet: fix data-race in fanout_flow_is_huge()
2020-01-29 10:24:35 +01:00
phonet
phonet: fix building with clang
2019-03-23 13:19:44 +01:00
qrtr
net: qrtr: Stop rx_worker before freeing node
2019-10-05 12:30:13 +02:00
rds
net/rds: Fix 'ib_evt_handler_call' element in 'rds_ib_stat_names'
2020-01-29 10:24:32 +01:00
rfkill
rfkill: Fix incorrect check to avoid NULL pointer dereference
2020-01-12 11:24:23 +01:00
rose
net: rose: fix a possible stack overflow
2019-04-03 06:24:14 +02:00
rxrpc
rxrpc: Fix service call disconnection
2020-02-14 16:31:08 -05:00
sched
net/sched: flower: add missing validation of TCA_FLOWER_FLAGS
2020-02-28 15:42:44 +01:00
sctp
sctp: free cmd->obj.chunk for the unprocessed SCTP_CMD_REPLY
2020-01-12 11:24:26 +01:00
strparser
strparser: Fix incorrect strp->need_bytes value.
2018-04-29 11:32:02 +02:00
sunrpc
sunrpc: expiry_time should be seconds not timeval
2020-02-14 16:31:03 -05:00
switchdev
switchdev: Execute bridge ndos only for bridge ports
2016-10-19 10:58:04 -04:00
tipc
tipc: set sysctl_tipc_rmem and named_timeout right range
2020-01-29 10:24:21 +01:00
unix
net: fix warning in af_unix
2019-11-28 18:28:28 +01:00
vmw_vsock
VSOCK: bind to random port for VMADDR_PORT_ANY
2019-12-05 15:34:26 +01:00
wimax
…
wireless
wireless: wext: avoid gcc -O3 warning
2020-02-05 13:05:51 +00:00
x25
net/x25: fix nonblocking connect
2020-01-29 10:24:41 +01:00
xfrm
xfrm: clean up xfrm protocol checks
2019-09-16 08:19:32 +02:00
compat.c
sock: Make sock->sk_stamp thread-safe
2019-01-09 16:16:41 +01:00
Kconfig
…
Makefile
…
socket.c
compat_ioctl: handle SIOCOUTQNSD
2020-01-23 08:19:36 +01:00
sysctl_net.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2016-10-06 09:52:23 -07:00