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0f10613320
linux-imx/net
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Eric Dumazet 0f10613320 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>
2024-08-19 06:04:28 +02:00
..
6lowpan
9p net/9p: fix uninit-value in p9_client_rpc() 2024-06-16 13:47:41 +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 12:02:07 +02:00
appletalk
atm
ax25 ax25: Replace kfree() in ax25_dev_free() with ax25_dev_put() 2024-06-21 14:38:14 +02:00
batman-adv batman-adv: Don't accept TT entries for out-of-spec VIDs 2024-07-05 09:34:04 +02:00
bluetooth Bluetooth: hci_sync: avoid dup filtering when passive scanning with adv monitor 2024-08-14 13:58:40 +02:00
bpf bpf: Set run context for rawtp test_run callback 2024-06-21 14:38:16 +02:00
bpfilter
bridge net: bridge: mcast: wait for previous gc cycles when removing port 2024-08-14 13:58:39 +02:00
caif
can net: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_session_new 2024-07-05 09:34:01 +02:00
ceph libceph: fix race between delayed_work() and ceph_monc_stop() 2024-07-18 13:21:22 +02:00
core net: linkwatch: use system_unbound_wq 2024-08-14 13:58:39 +02:00
dcb
dccp Fix race for duplicate reqsk on identical SYN 2024-07-05 09:33:48 +02:00
devlink devlink: fix port new reply cmd type 2024-03-26 18:20:11 -04:00
dns_resolver
dsa
ethernet ethernet: Add helper for assigning packet type when dest address does not match device address 2024-05-02 16:32:46 +02:00
ethtool ethtool: netlink: do not return SQI value if link is down 2024-07-18 13:21:14 +02:00
handshake
hsr hsr: Simplify code for announcing HSR nodes timer setup 2024-05-17 12:02:24 +02:00
ieee802154
ife
ipv4 tcp_metrics: optimize tcp_metrics_flush_all() 2024-08-19 06:04:25 +02:00
ipv6 ipv6: fix source address selection with route leak 2024-08-14 13:59:03 +02:00
iucv net/iucv: fix use after free in iucv_sock_close() 2024-08-11 12:47:21 +02:00
kcm net: kcm: fix incorrect parameter validation in the kcm_getsockopt) function 2024-03-26 18:19:40 -04:00
key
l2tp l2tp: fix lockdep splat 2024-08-14 13:58:40 +02:00
l3mdev
lapb
llc
mac80211 wifi: mac80211: fix change_address deadlock during unregister 2024-08-19 06:04:25 +02:00
mac802154 net: mac802154: Fix racy device stats updates by DEV_STATS_INC() and DEV_STATS_ADD() 2024-07-25 09:50:52 +02:00
mctp net: mctp: copy skb ext data when fragmenting 2024-03-26 18:19:34 -04:00
mpls net: mpls: error out if inner headers are not set 2024-04-13 13:07:41 +02:00
mptcp mptcp: pm: do not ignore 'subflow' if 'signal' flag is also set 2024-08-14 13:59:04 +02:00
ncsi net/ncsi: Fix the multi thread manner of NCSI driver 2024-06-21 14:38:14 +02:00
netfilter netfilter: nf_tables: prefer nft_chain_validate 2024-08-14 13:59:02 +02:00
netlabel
netlink
netrom netrom: Fix a memory leak in nr_heartbeat_expiry() 2024-06-27 13:49:06 +02:00
nfc nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies 2024-08-19 06:04:28 +02:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-05-17 12:02:02 +02:00
openvswitch openvswitch: get related ct labels from its master if it is not confirmed 2024-07-05 09:33:46 +02:00
packet af_packet: Handle outgoing VLAN packets without hardware offloading 2024-08-03 08:54:13 +02:00
phonet phonet: fix rtm_phonet_notify() skb allocation 2024-05-17 12:02:22 +02:00
psample
qrtr net: qrtr: ns: Fix module refcnt 2024-06-12 11:12:12 +02:00
rds net:rds: Fix possible deadlock in rds_message_put 2024-08-19 06:04:27 +02:00
rfkill
rose net/rose: fix races in rose_kill_by_device() 2024-01-01 12:42:31 +00:00
rxrpc rxrpc: Only transmit one ACK per jumbo packet received 2024-05-17 12:02:23 +02:00
sched net: don't dump stack on queue timeout 2024-08-19 06:04:26 +02:00
sctp net: sctp: fix skb leak in sctp_inq_free() 2024-08-19 06:04:27 +02:00
smc net/smc: add the max value of fallback reason count 2024-08-14 13:58:40 +02:00
strparser
sunrpc sunrpc: use the struct net as the svc proc private 2024-08-19 06:04:23 +02:00
switchdev
tipc tipc: Return non-zero value from tipc_udp_addr2str() on error 2024-08-03 08:54:37 +02:00
tls tls: fix missing memory barrier in tls_init 2024-06-12 11:12:50 +02:00
unix af_unix: Don't retry after unix_state_lock_nested() in unix_stream_connect(). 2024-08-14 13:58:43 +02:00
vmw_vsock vsock/virtio: fix packet delivery to tap device 2024-04-10 16:35:50 +02:00
wireless wifi: nl80211: don't give key data to userspace 2024-08-14 13:58:43 +02:00
x25 net/x25: fix incorrect parameter validation in the x25_getsockopt() function 2024-03-26 18:19:41 -04:00
xdp xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING 2024-04-17 11:19:28 +02:00
xfrm xfrm: call xfrm_dev_policy_delete when kill policy 2024-08-03 08:53:42 +02:00
compat.c
devres.c
Kconfig
Kconfig.debug
Makefile
socket.c
sysctl_net.c sysctl: treewide: drop unused argument ctl_table_root::set_ownership(table) 2024-08-11 12:47:13 +02:00