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Eric Dumazet 29dc0ea979 nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies 
[ Upstream commit 7a87441c96 ]

syzbot reported unsafe calls to copy_from_sockptr() [1]

Use copy_safe_from_sockptr() instead.

[1]

BUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset include/linux/sockptr.h:49 [inline]
 BUG: KASAN: slab-out-of-bounds in copy_from_sockptr include/linux/sockptr.h:55 [inline]
 BUG: KASAN: slab-out-of-bounds in nfc_llcp_setsockopt+0x6c2/0x850 net/nfc/llcp_sock.c:255
Read of size 4 at addr ffff88801caa1ec3 by task syz-executor459/5078

CPU: 0 PID: 5078 Comm: syz-executor459 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
  __dump_stack lib/dump_stack.c:88 [inline]
  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
  print_address_description mm/kasan/report.c:377 [inline]
  print_report+0x169/0x550 mm/kasan/report.c:488
  kasan_report+0x143/0x180 mm/kasan/report.c:601
  copy_from_sockptr_offset include/linux/sockptr.h:49 [inline]
  copy_from_sockptr include/linux/sockptr.h:55 [inline]
  nfc_llcp_setsockopt+0x6c2/0x850 net/nfc/llcp_sock.c:255
  do_sock_setsockopt+0x3b1/0x720 net/socket.c:2311
  __sys_setsockopt+0x1ae/0x250 net/socket.c:2334
  __do_sys_setsockopt net/socket.c:2343 [inline]
  __se_sys_setsockopt net/socket.c:2340 [inline]
  __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340
 do_syscall_64+0xfd/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f7fac07fd89
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff660eb788 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7fac07fd89
RDX: 0000000000000000 RSI: 0000000000000118 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000020000a80 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240408082845.3957374-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-05-17 12:14:45 +02:00
..
6lowpan net: fill in MODULE_DESCRIPTION()s for 6LoWPAN 2024-02-09 14:12:01 -08:00
9p 9p: Fix read/write debug statements to report server reply 2024-04-10 16:38:09 +02:00
802
…
8021q net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb 2024-05-17 12:14:34 +02:00
appletalk net: remove SOCK_DEBUG leftovers 2023-12-26 20:31:01 +00:00
atm net: fill in MODULE_DESCRIPTION()s for mpoa 2024-02-09 14:12:01 -08:00
ax25 ax25: Fix netdev refcount issue 2024-05-02 16:35:16 +02:00
batman-adv batman-adv: Avoid infinite loop trying to resize local TT 2024-04-17 11:23:24 +02:00
bluetooth Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync 2024-05-02 16:35:35 +02:00
bpf bpf: Fix dtor CFI 2023-12-15 16:25:55 -08:00
bridge net: bridge: fix multicast-to-unicast with fraglist GSO 2024-05-17 12:14:33 +02:00
caif net: fill in MODULE_DESCRIPTION()s for CAIF 2024-01-05 08:06:35 -08:00
can can: j1939: Fix UAF in j1939_sk_match_filter during setsockopt(SO_J1939_FILTER) 2024-02-14 13:53:03 +01:00
ceph libceph: init the cursor when preparing sparse read in msgr2 2024-03-06 12:43:01 +01:00
core net: mark racy access on sk->sk_rcvbuf 2024-05-17 12:14:38 +02:00
dcb
…
dccp net: remove SOCK_DEBUG leftovers 2023-12-26 20:31:01 +00:00
devlink devlink: fix port new reply cmd type 2024-03-26 18:17:36 -04:00
dns_resolver Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
dsa net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events 2024-01-11 16:33:52 -08:00
ethernet ethernet: Add helper for assigning packet type when dest address does not match device address 2024-05-02 16:35:30 +02:00
ethtool ethtool: netlink: Add missing ethnl_ops_begin/complete 2024-01-18 13:21:06 +01:00
handshake net/handshake: Fix handshake_req_destroy_test1 2024-02-08 18:32:29 -08:00
hsr net: hsr: hsr_slave: Fix the promiscuous mode in offload mode 2024-04-10 16:37:56 +02:00
ieee802154 mac802154: Avoid new associations while disassociating 2023-12-15 11:14:57 +01:00
ife net: sched: ife: fix potential use-after-free 2023-12-15 10:50:18 +00:00
ipv4 net: gro: add flush check in udp_gro_receive_segment 2024-05-17 12:14:34 +02:00
ipv6 net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb 2024-05-17 12:14:34 +02:00
iucv net/iucv: fix the allocation size of iucv_path_table array 2024-02-16 09:25:09 +00:00
kcm net: kcm: fix incorrect parameter validation in the kcm_getsockopt) function 2024-03-26 18:16:57 -04:00
key net: fill in MODULE_DESCRIPTION()s for af_key 2024-02-09 14:12:01 -08:00
l2tp net l2tp: drop flow hash on forward 2024-05-17 12:14:29 +02:00
l3mdev
…
lapb
…
llc llc: call sock_orphan() at release time 2024-01-30 13:49:09 +01:00
mac80211 wifi: mac80211: fix prep_connection error path 2024-05-17 12:14:38 +02:00
mac802154 mac802154: fix llsec key resources release in mac802154_llsec_key_del 2024-04-03 15:32:15 +02:00
mctp net: mctp: copy skb ext data when fragmenting 2024-03-26 18:16:49 -04:00
mpls net: mpls: error out if inner headers are not set 2024-04-13 13:10:12 +02:00
mptcp mptcp: don't account accept() of non-MPC client as fallback to TCP 2024-04-10 16:38:09 +02:00
ncsi
…
netfilter netfilter: nf_tables: honor table dormant flag from netdev release event path 2024-05-02 16:35:21 +02:00
netlabel
…
netlink netlink: Fix kernel-infoleak-after-free in __skb_datagram_iter 2024-02-22 18:56:09 -08:00
netrom netrom: Fix data-races around sysctl_net_busy_read 2024-03-07 10:36:58 +01:00
nfc nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies 2024-05-17 12:14:45 +02:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-05-17 12:14:29 +02:00
openvswitch net: openvswitch: Fix Use-After-Free in ovs_ct_exit 2024-05-02 16:35:20 +02:00
packet packet: annotate data-races around ignore_outgoing 2024-03-26 18:17:34 -04:00
phonet phonet/pep: fix racy skb_queue_empty() use 2024-02-22 09:05:50 +01:00
psample genetlink: Use internal flags for multicast groups 2023-12-29 08:43:59 +00:00
qrtr net: qrtr: ns: Return 0 if server port is not present 2024-01-01 18:41:29 +00:00
rds net/rds: fix possible cp null dereference 2024-04-10 16:38:02 +02:00
rfkill Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-12-21 22:17:23 +01:00
rose net/rose: fix races in rose_kill_by_device() 2023-12-15 11:59:53 +00:00
rxrpc rxrpc: Clients must accept conn from any address 2024-05-17 12:14:33 +02:00
sched net/sched: Fix mirred deadlock on device recursion 2024-04-27 17:12:53 +02:00
sctp net: sctp: fix skb leak in sctp_inq_free() 2024-02-15 07:34:52 -08:00
smc net/smc: reduce rtnl pressure in smc_pnet_create_pnetids_list() 2024-04-13 13:10:02 +02:00
strparser
…
sunrpc sunrpc: add a struct rpc_stats arg to rpc_create_args 2024-05-17 12:14:23 +02:00
switchdev net: bridge: switchdev: Skip MDB replays of deferred events on offload 2024-02-16 09:36:37 +00:00
tipc tipc: fix a possible memleak in tipc_buf_append 2024-05-17 12:14:33 +02:00
tls tls: fix lockless read of strp->msg_ready in ->poll 2024-05-02 16:35:22 +02:00
unix af_unix: Suppress false-positive lockdep splat for spin_lock() in __unix_gc(). 2024-05-02 16:35:23 +02:00
vmw_vsock vsock/virtio: fix packet delivery to tap device 2024-04-10 16:38:03 +02:00
wireless wifi: cfg80211: fix rdev_dump_mpp() arguments order 2024-05-17 12:14:37 +02:00
x25 net/x25: fix incorrect parameter validation in the x25_getsockopt() function 2024-03-26 18:16:57 -04:00
xdp xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING 2024-04-17 11:23:28 +02:00
xfrm xfrm: Allow UDP encapsulation only in offload modes 2024-03-26 18:17:34 -04:00
Kconfig bpfilter: remove bpfilter 2024-01-04 10:23:10 -08:00
Kconfig.debug
…
Makefile bpfilter: remove bpfilter 2024-01-04 10:23:10 -08:00
compat.c file: stop exposing receive_fd_user() 2023-12-12 14:24:14 +01:00
devres.c
…
socket.c vfs-6.8.iov_iter 2024-01-08 11:43:04 -08:00
sysctl_net.c
…