YueHaibing 58bdd544e2 net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails ... KASAN report this: BUG: KASAN: null-ptr-deref in nfc_llcp_build_gb+0x37f/0x540 [nfc] Read of size 3 at addr 0000000000000000 by task syz-executor.0/5401 CPU: 0 PID: 5401 Comm: syz-executor.0 Not tainted 5.0.0-rc7+ #45 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xfa/0x1ce lib/dump_stack.c:113 kasan_report+0x171/0x18d mm/kasan/report.c:321 memcpy+0x1f/0x50 mm/kasan/common.c:130 nfc_llcp_build_gb+0x37f/0x540 [nfc] nfc_llcp_register_device+0x6eb/0xb50 [nfc] nfc_register_device+0x50/0x1d0 [nfc] nfcsim_device_new+0x394/0x67d [nfcsim] ? 0xffffffffc1080000 nfcsim_init+0x6b/0x1000 [nfcsim] do_one_initcall+0xfa/0x5ca init/main.c:887 do_init_module+0x204/0x5f6 kernel/module.c:3460 load_module+0x66b2/0x8570 kernel/module.c:3808 __do_sys_finit_module+0x238/0x2a0 kernel/module.c:3902 do_syscall_64+0x147/0x600 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x462e99 Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9cb79dcc58 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 000000000073bf00 RCX: 0000000000462e99 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 RBP: 00007f9cb79dcc70 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9cb79dd6bc R13: 00000000004bcefb R14: 00000000006f7030 R15: 0000000000000004 nfc_llcp_build_tlv will return NULL on fails, caller should check it, otherwise will trigger a NULL dereference. Reported-by: Hulk Robot <hulkci@huawei.com> Fixes: eda21f16a5 ("NFC: Set MIU and RW values from CONNECT and CC LLCP frames") Fixes: d646960f79 ("NFC: Initial LLCP support") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-02-27 12:47:08 -08:00
..
6lowpan	6lowpan: convert to DEFINE_SHOW_ATTRIBUTE	2018-12-19 00:28:05 +01:00
9p	9p/net: put a lower bound on msize	2018-12-25 17:07:49 +09:00
802
8021q	net: core: dev: Add extack argument to dev_change_flags()	2018-12-06 13:26:07 -08:00
appletalk
atm	Revert "net: simplify sock_poll_wait"	2018-10-23 10:57:06 -07:00
ax25	ax25: fix possible use-after-free	2019-01-23 11:18:00 -08:00
batman-adv	batman-adv: fix uninit-value in batadv_interface_tx()	2019-02-12 13:30:43 -05:00
bluetooth	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2018-12-27 13:53:32 -08:00
bpf	bpf/test_run: fix unkillable BPF_PROG_TEST_RUN	2019-02-19 00:17:03 +01:00
bpfilter	net: bpfilter: change section name of bpfilter UMH blob.	2019-01-16 15:46:46 -08:00
bridge	Revert "bridge: do not add port to router list when receives query with source 0.0.0.0"	2019-02-23 18:36:06 -08:00
caif	Revert "net: simplify sock_poll_wait"	2018-10-23 10:57:06 -07:00
can	can: bcm: check timer values before ktime conversion	2019-01-22 11:33:46 +01:00
ceph	libceph: handle an empty authorize reply	2019-02-18 18:05:33 +01:00
core	net: Do not allocate page fragments that are not skb aligned	2019-02-17 15:48:43 -08:00
dcb
dccp	dccp: fool proof ccid_hc_[rt]x_parse_options()	2019-02-01 14:49:10 -08:00
decnet	decnet: fix DN_IFREQ_SIZE	2019-01-27 23:11:55 -08:00
dns_resolver	dns: Allow the dns resolver to retrieve a server set	2018-10-04 09:40:52 -07:00
dsa	net: dsa: fix a leaked reference by adding missing of_node_put	2019-02-25 09:34:52 -08:00
ethernet	net: ethernet: provide nvmem_get_mac_address()	2018-12-03 15:40:30 -08:00
hsr
ieee802154	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-12-24 16:19:56 -08:00
ife
ipv4	ipv4: Return error for RTA_VIA attribute	2019-02-26 13:23:17 -08:00
ipv6	ipv6: Return error for RTA_VIA attribute	2019-02-26 13:23:17 -08:00
iucv	iucv: Remove SKB list assumptions.	2018-11-10 16:55:11 -08:00
kcm
key	af_key: unconditionally clone on broadcast	2019-02-12 10:36:42 +01:00
l2tp	l2tp: copy 4 more bytes to linear part if necessary	2019-01-31 08:58:46 -08:00
l3mdev	l3mdev: add function to retreive upper master	2018-12-03 14:15:26 -08:00
lapb
llc	llc: do not use sk_eat_skb()	2018-10-22 19:59:20 -07:00
mac80211	mac80211: allocate tailroom for forwarded mesh packets	2019-02-22 14:00:40 +01:00
mac802154	mac802154: Remove VLA usage of skcipher	2018-09-28 12:46:07 +08:00
mpls	mpls: Return error for RTA_GATEWAY attribute	2019-02-26 13:23:17 -08:00
ncsi	net/ncsi: Add NCSI Mellanox OEM command	2018-11-27 16:37:20 -08:00
netfilter	ipvs: fix warning on unused variable	2019-02-16 10:41:42 +01:00
netlabel
netlink	net: netlink: rename NETLINK_DUMP_STRICT_CHK -> NETLINK_GET_STRICT_CHK	2018-12-14 11:44:31 -08:00
netrom	netrom: switch to sock timer API	2019-01-27 10:38:04 -08:00
nfc	net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails	2019-02-27 12:47:08 -08:00
nsh
openvswitch	openvswitch: Avoid OOB read when parsing flow nlattrs	2019-01-16 13:35:21 -08:00
packet	net/packet: fix 4gb buffer limit due to overflow check	2019-02-12 13:37:23 -05:00
phonet	phonet: fix building with clang	2019-02-21 16:23:56 -08:00
psample
qrtr
rds	rds: fix refcount bug in rds_sock_addref	2019-01-31 09:43:27 -08:00
rfkill	rfkill: gpio: Remove unused include	2018-12-18 13:13:56 +01:00
rose	net/rose: fix NULL ax25_cb kernel panic	2019-01-27 10:40:01 -08:00
rxrpc	rxrpc: bad unlock balance in rxrpc_recvmsg	2019-02-06 10:54:07 -08:00
sched	net: sched: act_tunnel_key: fix NULL pointer dereference during init	2019-02-25 10:13:38 -08:00
sctp	sctp: don't compare hb_timer expire date before starting it	2019-02-22 11:11:54 -08:00
smc	net/smc: fix smc_poll in SMC_INIT state	2019-02-21 10:19:20 -08:00
strparser	bpf, sockmap: convert to generic sk_msg interface	2018-10-15 12:23:19 -07:00
sunrpc	Two small fixes, one for crashes using nfs/krb5 with older enctypes, one	2019-02-16 17:38:01 -08:00
switchdev	net: switchdev: Add extack to switchdev_handle_port_obj_add() callback	2018-12-12 16:34:22 -08:00
tipc	tipc: fix race condition causing hung sendto	2019-02-26 14:50:50 -08:00
tls	net: tls: Fix deadlock in free_resources tx	2019-01-28 23:07:08 -08:00
unix	missing barriers in some of unix_sock ->addr and ->path accesses	2019-02-20 20:06:28 -08:00
vmw_vsock	vsock: cope with memory allocation failure at socket creation time	2019-02-08 22:32:05 -08:00
wimax
wireless	cfg80211: prevent speculation on cfg80211_classify8021d() return	2019-02-11 15:50:56 +01:00
x25	net/x25: fix a race in x25_bind()	2019-02-23 18:41:06 -08:00
xdp	Revert "xsk: simplify AF_XDP socket teardown"	2019-02-21 16:32:25 +01:00
xfrm	xfrm: Fix inbound traffic via XFRM interfaces across network namespaces	2019-02-18 10:58:54 +01:00
compat.c	net: socket: add check for negative optlen in compat setsockopt	2019-02-22 11:49:28 -08:00
Kconfig	net: convert bridge_nf to use skb extension infrastructure	2018-12-19 11:21:37 -08:00
Makefile
socket.c	net: socket: set sock->sk to NULL after calling proto_ops::release()	2019-02-25 10:40:57 -08:00
sysctl_net.c