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Florian Westphal 766a7ad663 netfilter: ebtables: reject non-bridge targets 
commit 11ff7288be upstream.

the ebtables evaluation loop expects targets to return
positive values (jumps), or negative values (absolute verdicts).

This is completely different from what xtables does.
In xtables, targets are expected to return the standard netfilter
verdicts, i.e. NF_DROP, NF_ACCEPT, etc.

ebtables will consider these as jumps.

Therefore reject any target found due to unspec fallback.
v2: also reject watchers.  ebtables ignores their return value, so
a target that assumes skb ownership (and returns NF_STOLEN) causes
use-after-free.

The only watchers in the 'ebtables' front-end are log and nflog;
both have AF_BRIDGE specific wrappers on kernel side.

Reported-by: syzbot+2b43f681169a2a0d306a@syzkaller.appspotmail.com
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2018-07-22 14:28:49 +02:00
..
6lowpan License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
9p 9p/trans_virtio: discard zero-length reply 2018-02-22 15:42:30 +01:00
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 packet loss for broadcasted DHCP packets to a server 2018-05-30 07:52:19 +02:00
bluetooth Bluetooth: Fix connection if directed advertising and privacy is used 2018-04-19 08:56:19 +02:00
bpf bpf: Align packet data properly in program testing framework. 2017-05-02 11:46:28 -04:00
bridge netfilter: ebtables: reject non-bridge targets 2018-07-22 14:28:49 +02:00
caif License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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 rtnetlink: validate attributes in do_setlink() 2018-06-11 22:49:22 +02:00
dcb rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
dccp net: dccp: switch rx_tstamp_last_feedback to monotonic clock 2018-07-22 14:28:44 +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: limit the length of option strings 2018-04-29 11:33:10 +02:00
dsa net: dsa: add error handling for pskb_trim_rcsum 2018-06-26 08:06:28 +08:00
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 ieee802154: 6lowpan: fix possible NULL deref in lowpan_device_event() 2018-03-31 18:10:40 +02:00
ife net: sched: ife: check on metadata length 2018-04-29 11:33:13 +02:00
ipv4 tcp: prevent bogus FRTO undos with non-SACK flows 2018-07-22 14:28:47 +02:00
ipv6 net/tcp: Fix socket lookups with SO_BINDTODEVICE 2018-07-22 14:28:46 +02:00
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: revert "l2tp: fix missing print session offset info" 2018-05-19 10:20:27 +02:00
l3mdev net: ipv6: Remove l3mdev_get_saddr6 2016-09-10 23:12:53 -07:00
lapb net, lapb: convert lapb_cb.refcnt from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
llc llc: properly handle dev_queue_xmit() return value 2018-05-30 07:52:20 +02:00
mac80211 mac80211: use timeout from the AddBA response instead of the request 2018-06-21 04:02:55 +09:00
mac802154 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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_queue: augment nfqa_cfg_policy 2018-07-17 11:39:32 +02:00
netlabel netlabel: If PF_INET6, check sk_buff ip header version 2018-05-30 07:52:40 +02:00
netlink netlink: fix uninit-value in netlink_sendmsg 2018-05-16 10:10:23 +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: llcp: Limit size of SDP URI 2018-05-30 07:51:57 +02:00
nsh nsh: fix infinite loop 2018-05-19 10:20:26 +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 use-after-free 2018-07-22 14:28:46 +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 qrtr: add MODULE_ALIAS macro to smd 2018-05-30 07:52:05 +02:00
rds rds: ib: Fix missing call to rds_ib_dev_put in rds_ib_setup_qp 2018-06-21 04:02:48 +09:00
rfkill rfkill: gpio: fix memory leak in probe error path 2018-05-16 10:10:26 +02:00
rose net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
rxrpc rxrpc: Fix the min security level for kernel calls 2018-06-21 04:02:56 +09:00
sched net_sched: blackhole: tell upper qdisc about dropped packets 2018-07-22 14:28:46 +02:00
sctp sctp: not allow transport timeout value less than HZ/5 for hb_timer 2018-06-11 22:49:20 +02:00
smc smc: fix sendpage() call 2018-06-21 04:02:53 +09:00
strparser strparser: Remove early eaten to fix full tcp receive buffer stall 2018-07-22 14:28:47 +02:00
sunrpc xprtrdma: Fix corner cases when handling device removal 2018-07-22 14:28:42 +02:00
switchdev net: switchdev: Remove bridge bypass support from switchdev 2017-08-07 14:48:48 -07:00
tipc tipc: eliminate KMSAN uninit-value in strcmp complaint 2018-06-21 04:02:56 +09:00
tls tls: fix use-after-free in tls_push_record 2018-06-26 08:06:29 +08:00
unix License cleanup: add SPDX license identifiers to some files 2017-11-02 10:04:46 -07:00
vmw_vsock VSOCK: fix loopback on big-endian systems 2018-07-22 14:28:47 +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: clear wep keys after disconnection 2018-05-30 07:51:58 +02:00
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: Fix transport mode skb control buffer usage. 2018-05-30 07:52:19 +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
compat.c net: support compat 64-bit time in {s,g}etsockopt 2018-05-19 10:20:24 +02:00
socket.c socket: close race condition between sock_close() and sockfs_setattr() 2018-06-26 08:06:28 +08:00
sysctl_net.c sysctl: Remove dead register_sysctl_root 2017-04-16 23:42:49 -05:00