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fa8fca8871
linux/net
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Fernando Fernandez Mancera fa8fca8871 ipv4: validate IPV4_DEVCONF attributes properly 
As the IPV4_DEVCONF netlink attributes are not being validated, it is
possible to use netlink to set read-only values like mc_forwarding. In
addition, valid ranges are not being validated neither but that is less
relevant as they aren't in sysctl.

To avoid similar situations in the future, define a NLA policy for
IPV4_DEVCONF attributes which are nested in IFLA_INET_CONF.

Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Link: https://patch.msgid.link/20260312142637.5704-1-fmancera@suse.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-14 09:52:30 -07:00
..
6lowpan net: replace ND_PRINTK with dynamic debug 2025-07-10 15:27:32 -07:00
9p Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
802 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
8021q Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
appletalk Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
atm ppp: simplify input error handling 2026-03-09 19:07:38 -07:00
ax25 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
batman-adv Here is a batman-adv bugfix: 2026-02-26 19:15:09 -08:00
bluetooth Including fixes from IPsec, Bluetooth and netfilter 2026-02-26 08:00:13 -08:00
bpf Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-03-05 12:11:05 -08:00
caif Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
can can: bcm: fix locking for bcm_op runtime updates 2026-03-02 10:24:40 +01:00
ceph Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
core net: plumb drop reasons to __dev_queue_xmit() 2026-03-14 08:38:06 -07:00
dcb Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
devlink Convert 'alloc_flex' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
dns_resolver net: Add SPDX ids to some source files 2026-03-09 18:32:45 -07:00
dsa Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ethernet net: optimize eth_type_trans() vs CONFIG_STACKPROTECTOR_STRONG=y 2025-11-24 19:27:31 -08:00
ethtool net: ethtool: Track pause storm events 2026-03-05 16:26:52 +01:00
handshake treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
hsr net/hsr: update outdated comments 2026-02-27 17:24:58 -08:00
ieee802154 net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
ife
ipv4 ipv4: validate IPV4_DEVCONF attributes properly 2026-03-14 09:52:30 -07:00
ipv6 udp: Don't pass proto to __udp4_lib_rcv() and __udp6_lib_rcv(). 2026-03-13 18:57:46 -07:00
iucv Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
kcm kcm: fix zero-frag skb in frag_list on partial sendmsg error 2026-02-23 17:26:55 -08:00
key Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
l2tp net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
l3mdev
lapb treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
llc treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-03-05 12:11:05 -08:00
mac802154 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
mctp mctp: route: hold key->lock in mctp_flow_prepare_output() 2026-03-10 11:38:36 +01:00
mpls mpls: remove test against ipv6_stub 2026-03-02 18:48:43 -08:00
mptcp mptcp: keep rcv_mwnd_seq in sync with subflow rcv_wnd 2026-03-14 08:01:49 -07:00
ncsi net: ncsi: fix skb leak in error paths 2026-03-06 17:34:48 -08:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-03-12 12:53:34 -07:00
netlabel Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
netlink netlink: update outdated comment 2026-03-12 19:29:01 -07:00
netrom Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
nfc nfc: rawsock: cancel tx_work before socket teardown 2026-03-04 18:18:57 -08:00
nsh
openvswitch Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
packet Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
phonet net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
psample treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
psp net: fix off-by-one in udp_flow_src_port() / psp_write_headers() 2026-03-04 16:51:10 -08:00
qrtr Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-03-05 12:11:05 -08:00
rfkill Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
rose Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
rxrpc ipv6: Retire UDP-Lite. 2026-03-13 18:57:44 -07:00
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-03-12 12:53:34 -07:00
sctp net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
shaper net-shapers: don't free reply skb after genlmsg_reply() 2026-03-10 19:29:09 -07:00
smc Including fixes from IPsec, Bluetooth and netfilter 2026-02-26 08:00:13 -08:00
strparser Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-11-13 12:35:38 -08:00
sunrpc Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
switchdev treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
tipc tipc: fix divide-by-zero in tipc_sk_filter_connect() 2026-03-11 18:56:28 -07:00
tls net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-03-05 12:11:05 -08:00
vmw_vsock vsock: add G2H fallback for CIDs not owned by H2G transport 2026-03-12 10:59:36 +01:00
wireless wifi: cfg80211: support key installation on non-netdev wdevs 2026-03-02 11:28:33 +01:00
x25 treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
xdp xsk: Fix zero-copy AF_XDP fragment drop 2026-02-28 08:55:11 -08:00
xfrm net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
compat.c socket: Unify getsockname and getpeername implementation 2025-11-26 13:45:23 -07:00
devres.c
Kconfig net: Kconfig: discourage drop_monitor enablement 2025-10-17 16:29:26 -07:00
Kconfig.debug
Makefile psp: base PSP device support 2025-09-18 12:32:06 +02:00
socket.c net: Convert move_addr_to_user() to scoped user access 2026-03-11 20:38:00 -07:00
sysctl_net.c