Eric Dumazet ae1ed37bae net: fix possible out-of-bound read in skb_network_protocol() ... [ Upstream commit 1dfe82ebd7d8fd43dba9948fdfb31f145014baa0 ] skb mac header is not necessarily set at the time skb_network_protocol() is called. Use skb->data instead. BUG: KASAN: slab-out-of-bounds in skb_network_protocol+0x46b/0x4b0 net/core/dev.c:2739 Read of size 2 at addr ffff8801b3097a0b by task syz-executor5/14242 CPU: 1 PID: 14242 Comm: syz-executor5 Not tainted 4.16.0-rc6+ #280 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 print_address_description+0x73/0x250 mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report+0x23c/0x360 mm/kasan/report.c:412 __asan_report_load_n_noabort+0xf/0x20 mm/kasan/report.c:443 skb_network_protocol+0x46b/0x4b0 net/core/dev.c:2739 harmonize_features net/core/dev.c:2924 [inline] netif_skb_features+0x509/0x9b0 net/core/dev.c:3011 validate_xmit_skb+0x81/0xb00 net/core/dev.c:3084 validate_xmit_skb_list+0xbf/0x120 net/core/dev.c:3142 packet_direct_xmit+0x117/0x790 net/packet/af_packet.c:256 packet_snd net/packet/af_packet.c:2944 [inline] packet_sendmsg+0x3aed/0x60b0 net/packet/af_packet.c:2969 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg+0xca/0x110 net/socket.c:639 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2047 __sys_sendmsg+0xe5/0x210 net/socket.c:2081 Fixes: 19acc32725 ("gso: Handle Trans-Ether-Bridging protocol in skb_network_protocol()") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Pravin B Shelar <pshelar@ovn.org> Reported-by: Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-04-13 19:50:24 +02:00
..
6lowpan	6lowpan: put mcast compression in an own function	2015-10-21 00:49:25 +02:00
9p	net/9p: Switch to wait_event_killable()	2017-11-30 08:37:25 +00:00
802	net: Kill dev_rebuild_header	2015-03-02 16:43:41 -05:00
8021q	net/8021q: create device with all possible features in wanted_features	2018-03-22 09:23:21 +01:00
appletalk	net: Pass kern from net_proto_family.create to sk_alloc	2015-05-11 10:50:17 -04:00
atm	atm: deal with setting entry before mkip was called	2015-09-17 22:13:32 -07:00
ax25	ax25: Fix segfault after sock connection timeout	2017-02-04 09:45:09 +01:00
batman-adv	batman-adv: handle race condition for claims between gateways	2018-03-22 09:23:21 +01:00
bluetooth	Bluetooth: Send HCI Set Event Mask Page 2 command only when needed	2018-04-13 19:50:21 +02:00
bridge	netfilter: bridge: ebt_among: add more missing match size checks	2018-04-08 11:51:59 +02:00
caif	net: caif: Fix a sleep-in-atomic bug in cfpkt_create_pfx	2017-07-05 14:37:14 +02:00
can	can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once	2018-01-31 12:06:08 +01:00
ceph	libceph: NULL deref on crush_decode() error path	2018-04-13 19:50:10 +02:00
core	net: fix possible out-of-bound read in skb_network_protocol()	2018-04-13 19:50:24 +02:00
dcb	net/dcb: make dcbnl.c explicitly non-modular	2015-10-09 07:52:27 -07:00
dccp	dccp: check sk for closed state in dccp_sendmsg()	2018-03-31 18:12:33 +02:00
decnet	dn_getsockoptdecnet: move nf_{get/set}sockopt outside sock lock	2018-02-25 11:03:38 +01:00
dns_resolver	KEYS: Fix race between updating and finding a negative key	2017-10-27 10:23:18 +02:00
dsa	net: dsa: select NET_SWITCHDEV	2017-11-15 17:13:11 +01:00
ethernet	net: introduce device min_header_len	2017-02-18 16:39:27 +01:00
hsr	net/hsr: fix a warning message	2015-11-23 14:56:15 -05:00
ieee802154	net: ieee802154: fix net_device reference release too early	2018-04-13 19:50:10 +02:00
ipv4	arp: fix arp_filter on l3slave devices	2018-04-13 19:50:24 +02:00
ipv6	ipsec: check return value of skb_to_sgvec always	2018-04-13 19:50:23 +02:00
ipx	ipx: call ipxitf_put() in ioctl error path	2017-05-25 14:30:13 +02:00
irda	irda: do not leak initialized list.dev to userspace	2017-08-30 10:19:21 +02:00
iucv	net/iucv: Free memory obtained by kzalloc	2018-03-31 18:12:33 +02:00
key	af_key: Fix slab-out-of-bounds in pfkey_compile_policy.	2018-04-13 19:50:01 +02:00
l2tp	l2tp: fix missing print session offset info	2018-04-13 19:50:12 +02:00
l3mdev	net: Add netif_is_l3_slave	2015-10-07 04:27:43 -07:00
lapb	lapb: move EXPORT_SYMBOL after functions.	2014-10-24 15:51:42 -04:00
llc	net: llc: add lock_sock in llc_ui_bind to avoid a race condition	2018-04-13 19:50:12 +02:00
mac80211	mac80211: bail out from prep_connection() if a reconfig is ongoing	2018-04-13 19:50:01 +02:00
mac802154	mac802154: llsec: use kzfree	2015-10-21 00:49:24 +02:00
mpls	mpls, nospec: Sanitize array index in mpls_label_ok()	2018-03-11 16:19:47 +01:00
netfilter	netfilter: ctnetlink: fix incorrect nf_ct_put during hash resize	2018-04-13 19:50:10 +02:00
netlabel	netlabel: add address family checks to netlbl_{sock,req}_delattr()	2016-08-20 18:09:22 +02:00
netlink	netlink: avoid a double skb free in genlmsg_mcast()	2018-03-31 18:12:33 +02:00
netrom	netfilter: Remove spurios included of netfilter.h	2015-06-18 21:14:32 +02:00
nfc	NFC: fix device-allocation error return	2017-11-30 08:37:23 +00:00
openvswitch	openvswitch: Delete conntrack entry clashing with an expectation.	2018-03-24 10:58:43 +01:00
packet	net/packet: fix a race in packet_bind() and packet_notifier()	2017-12-16 10:33:56 +01:00
phonet	phonet: properly unshare skbs in phonet_rcv()	2016-01-31 11:29:00 -08:00
rds	rds; Reset rs->rs_bound_addr in rds_add_bound() failure path	2018-04-13 19:50:13 +02:00
rfkill	rfkill: fix rfkill_fop_read wait_event usage	2016-03-03 15:07:26 -08:00
rose	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-06-24 02:58:51 -07:00
rxrpc	rxrpc: check return value of skb_to_sgvec always	2018-04-13 19:50:23 +02:00
sched	sched: act_csum: don't mangle TCP and UDP GSO packets	2018-03-22 09:23:22 +01:00
sctp	sctp: fix recursive locking warning in sctp_do_peeloff	2018-04-13 19:50:20 +02:00
sunrpc	SUNRPC: ensure correct error is reported by xs_tcp_setup_socket()	2018-04-13 19:50:15 +02:00
switchdev	switchdev: pass pointer to fib_info instead of copy	2016-06-24 10:18:16 -07:00
tipc	tipc: fix memory leak in tipc_accept_from_sock()	2017-12-16 10:33:56 +01:00
unix	net/unix: don't show information about sockets from other namespaces	2017-11-18 11:11:06 +01:00
vmw_vsock	vsock: use new wait API for vsock_stream_sendmsg()	2017-11-30 08:37:19 +00:00
wimax	net:wimax: Fix doucble word "the the" in networking.xml	2015-08-09 22:43:52 -07:00
wireless	nl80211: Sanitize array index in parse_txq_params	2018-02-25 11:03:53 +01:00
x25	net: x25: fix one potential use-after-free issue	2018-04-13 19:50:07 +02:00
xfrm	xfrm: fix state migration copy replay sequence numbers	2018-04-13 19:50:08 +02:00
compat.c	audit: log 32-bit socketcalls	2017-10-08 10:14:18 +02:00
Kconfig	Make DST_CACHE a silent config option	2018-02-25 11:03:37 +01:00
Makefile	net: Introduce L3 Master device abstraction	2015-09-29 20:40:32 -07:00
socket.c	bpf: introduce BPF_JIT_ALWAYS_ON config	2018-02-03 17:04:24 +01:00
sysctl_net.c	net: Use ns_capable_noaudit() when determining net sysctl permissions	2016-09-15 08:27:50 +02:00