linux/net
Willem de Bruijn abdea7a45a packet: in recvmsg msg_name return at least sizeof sockaddr_ll
[ Upstream commit b2cf86e156 ]

Packet send checks that msg_name is at least sizeof sockaddr_ll.
Packet recv must return at least this length, so that its output
can be passed unmodified to packet send.

This ceased to be true since adding support for lladdr longer than
sll_addr. Since, the return value uses true address length.

Always return at least sizeof sockaddr_ll, even if address length
is shorter. Zero the padding bytes.

Change v1->v2: do not overwrite zeroed padding again. use copy_len.

Fixes: 0fb375fb9b ("[AF_PACKET]: Allow for > 8 byte hardware addresses.")
Suggested-by: David Laight <David.Laight@aculab.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-27 14:50:43 +01:00
..
6lowpan 6lowpan: Off by one handling ->nexthdr 2020-01-27 14:50:41 +01:00
9p 9p: Transport error uninitialized 2019-10-11 18:21:12 +02:00
802
8021q vlan: vlan_changelink() should propagate errors 2020-01-12 12:17:28 +01:00
appletalk appletalk: Set error code if register_snap_client failed 2019-12-13 08:52:59 +01:00
atm net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
ax25 ax25: enforce CAP_NET_RAW for raw sockets 2019-10-05 13:09:32 +02:00
batman-adv batman-adv: Fix DAT candidate selection on little endian systems 2020-01-23 08:21:34 +01:00
bluetooth Bluetooth: Fix memory leak in hci_connect_le_scan 2020-01-09 10:19:04 +01:00
bpf bpf/test_run: support cgroup local storage 2018-08-03 00:47:32 +02:00
bpfilter net: bpfilter: use get_pid_task instead of pid_task 2018-10-17 22:03:40 -07:00
bridge bridge: br_arp_nd_proxy: set icmp6_router if neigh has NTF_ROUTER 2020-01-27 14:49:55 +01:00
caif net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
can can: gw: Fix error path of cgw_module_init 2019-08-29 08:28:30 +02:00
ceph libceph: fix PG split vs OSD (re)connect race 2019-08-29 08:28:50 +02:00
core ethtool: reduce stack usage with clang 2020-01-17 19:46:55 +01:00
dcb net: dcb: Add priority-to-DSCP map getters 2018-07-27 13:17:50 -07:00
dccp dccp: Fix memleak in __feat_register_sp 2020-01-17 19:46:58 +01:00
decnet net: add bool confirm_neigh parameter for dst_ops.update_pmtu 2020-01-04 19:13:37 +01:00
dns_resolver net: remove blank lines at end of file 2018-07-24 14:10:43 -07:00
dsa net: dsa: Avoid null pointer when failing to connect to PHY 2020-01-27 14:50:34 +01:00
ethernet net: add annotations on hh->hh_len lockless accesses 2020-01-09 10:19:09 +01:00
hsr hsr: reset network header when supervision frame is created 2020-01-17 19:47:00 +01:00
ieee802154 ieee802154: enforce CAP_NET_RAW for raw sockets 2019-10-05 13:09:32 +02:00
ife
ipv4 ip_tunnel: Fix route fl4 init in ip_md_tunnel_xmit 2020-01-27 14:50:16 +01:00
ipv6 ipv6: add missing tx timestamping on IPPROTO_RAW 2020-01-27 14:50:05 +01:00
iucv Revert "net: simplify sock_poll_wait" 2018-11-04 14:50:51 +01:00
kcm kcm: switch order of device registration to fix a crash 2019-04-17 08:38:40 +02:00
key af_key: fix leaks in key_pol_get_resp and dump_sp. 2019-07-26 09:14:01 +02:00
l2tp compat_ioctl: pppoe: fix PPPOEIOCSFWD handling 2019-08-09 17:52:34 +02:00
l3mdev
lapb lapb: fixed leak of control-blocks. 2019-06-22 08:15:13 +02:00
llc llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c) 2020-01-12 12:17:23 +01:00
mac80211 mac80211: Do not send Layer 2 Update frame before authorization 2020-01-17 19:46:56 +01:00
mac802154 net: mac802154: tx: expand tailroom if necessary 2018-08-06 11:21:37 +02:00
mpls mpls: Return error for RTA_GATEWAY attribute 2019-03-10 07:17:19 +01:00
ncsi net/ncsi: Fixup .dumpit message flags and ID check in Netlink handler 2018-08-22 21:39:08 -07:00
netfilter netfilter: nft_flow_offload: add entry to flowtable after confirmation 2020-01-27 14:50:43 +01:00
netlabel netlabel: fix out-of-bounds memory accesses 2019-03-10 07:17:18 +01:00
netlink genetlink: Fix a memory leak on error path 2019-04-03 06:26:15 +02:00
netrom netrom: hold sock when setting skb->destructor 2019-07-28 08:29:27 +02:00
nfc net: nfc: nci: fix a possible sleep-in-atomic-context bug in nci_uart_tty_receive() 2019-12-31 16:34:38 +01:00
nsh nsh: set mac len based on inner packet 2018-07-12 16:55:29 -07:00
openvswitch openvswitch: support asymmetric conntrack 2019-12-21 10:57:14 +01:00
packet packet: in recvmsg msg_name return at least sizeof sockaddr_ll 2020-01-27 14:50:43 +01:00
phonet net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
psample net: psample: fix skb_over_panic 2019-12-05 09:21:30 +01:00
qrtr net: qrtr: fix memort leak in qrtr_tun_write_iter 2019-12-13 08:52:58 +01:00
rds net/rds: Fix error handling in rds_ib_add_one() 2019-10-07 18:57:24 +02:00
rfkill rfkill: Fix incorrect check to avoid NULL pointer dereference 2020-01-12 12:17:17 +01:00
rose net/rose: fix unbound loop in rose_loopback_timer() 2019-05-02 09:59:00 +02:00
rxrpc rxrpc: Fix detection of out of order acks 2020-01-27 14:50:38 +01:00
sched net/sched: cbs: fix port_rate miscalculation 2020-01-27 14:50:37 +01:00
sctp sctp: free cmd->obj.chunk for the unprocessed SCTP_CMD_REPLY 2020-01-12 12:17:27 +01:00
smc net/smc: original socket family in inet_sock_diag 2020-01-27 14:50:20 +01:00
strparser net: strparser: partially revert "strparser: Call skb_unclone conditionally" 2019-05-16 19:41:27 +02:00
sunrpc SUNRPC: Fix svcauth_gss_proxy_init() 2020-01-27 14:49:51 +01:00
switchdev
tipc tipc: set sysctl_tipc_rmem and named_timeout right range 2020-01-27 14:50:39 +01:00
tls net: tls, fix sk_write_space NULL write when tx disabled 2019-09-06 10:22:04 +02:00
unix af_unix: add compat_ioctl support 2020-01-17 19:47:07 +01:00
vmw_vsock VSOCK: bind to random port for VMADDR_PORT_ANY 2019-12-05 09:20:19 +01:00
wimax wimax: remove blank lines at EOF 2018-07-24 14:10:42 -07:00
wireless cfg80211: regulatory: make initialization more robust 2020-01-27 14:49:57 +01:00
x25 net/x25: fix null_x25_address handling 2019-12-13 08:52:15 +01:00
xdp xsk: add missing smp_rmb() in xsk_mmap 2020-01-27 14:50:21 +01:00
xfrm xfrm interface: fix management of phydev 2019-12-13 08:52:42 +01:00
compat.c sock: Make sock->sk_stamp thread-safe 2019-01-09 17:38:33 +01:00
Kconfig net: remove blank lines at end of file 2018-07-24 14:10:43 -07:00
Makefile bpfilter: check compiler capability in Kconfig 2018-06-28 13:36:39 +09:00
socket.c compat_ioctl: handle SIOCOUTQNSD 2020-01-17 19:47:07 +01:00
sysctl_net.c