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linux-stable/net/ipv4
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Eric Dumazet c760089aa9 netfilter: complete validation of user input 
[ Upstream commit 65acf6e050 ]

In my recent commit, I missed that do_replace() handlers
use copy_from_sockptr() (which I fixed), followed
by unsafe copy_from_sockptr_offset() calls.

In all functions, we can perform the @optlen validation
before even calling xt_alloc_table_info() with the following
check:

if ((u64)optlen < (u64)tmp.size + sizeof(tmp))
        return -EINVAL;

Fixes: 0c83842df4 ("netfilter: validate user input for expected length")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
Link: https://lore.kernel.org/r/20240409120741.3538135-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-04-17 11:18:25 +02:00
..
bpfilter
…
netfilter netfilter: complete validation of user input 2024-04-17 11:18:25 +02:00
Kconfig tcp: configurable source port perturb table size 2022-11-16 13:02:04 +00:00
Makefile
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af_inet.c inet: read sk->sk_family once in inet_recv_error() 2024-02-16 19:06:27 +01:00
ah4.c xfrm: ah: add extack to ah_init_state, ah6_init_state 2022-09-29 07:17:59 +02:00
arp.c arp: Prevent overflow in arp_req_get(). 2024-03-01 13:26:39 +01:00
bpf_tcp_ca.c bpf: Use 0 instead of NOT_INIT for btf_struct_access() writes 2022-09-10 17:27:32 -07:00
cipso_ipv4.c cipso: Fix data-races around sysctl. 2022-07-08 12:10:33 +01:00
datagram.c ipv4: fix data-races around inet->inet_id 2023-08-30 16:11:02 +02:00
devinet.c ipv4: properly combine dev_base_seq and ipv4.dev_addr_genid 2024-03-01 13:26:36 +01:00
esp4.c net: ipv4: fix return value check in esp_remove_trailer 2023-10-25 12:03:06 +02:00
esp4_offload.c xfrm: Linearize the skb after offloading if needed. 2023-06-28 11:12:29 +02:00
fib_frontend.c ipv4: Fix incorrect table ID in IOCTL path 2023-03-22 13:33:50 +01:00
fib_lookup.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-02-17 11:44:20 -08:00
fib_notifier.c
…
fib_rules.c ipv4: remove unnecessary type castings 2022-04-30 15:12:58 +01:00
fib_semantics.c ipv4/fib: send notify when delete source address routes 2023-10-25 12:03:11 +02:00
fib_trie.c ipv4/fib: send notify when delete source address routes 2023-10-25 12:03:11 +02:00
fou.c genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
gre_demux.c
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gre_offload.c net: gro: skb_gro_header helper function 2022-08-25 10:33:21 +02:00
icmp.c icmp: guard against too small mtu 2023-04-13 16:55:21 +02:00
igmp.c ipv4: igmp: fix refcnt uaf issue when receiving igmp query packet 2023-12-08 08:51:17 +01:00
inet_connection_sock.c tcp: Fix bind() regression for v6-only wildcard and v4(-mapped-v6) non-wildcard addresses. 2024-04-10 16:28:29 +02:00
inet_diag.c inet_diag: annotate data-races around inet_diag_table[] 2024-03-26 18:20:31 -04:00
inet_fragment.c inet: inet_defrag: prevent sk release while still in use 2024-04-10 16:28:23 +02:00
inet_hashtables.c tcp: Fix refcnt handling in __inet_hash_connect(). 2024-03-26 18:20:59 -04:00
inet_timewait_sock.c tcp: Fix NEW_SYN_RECV handling in inet_twsk_purge() 2024-03-26 18:20:58 -04:00
inetpeer.c inetpeer: Fix data-races around sysctl. 2022-07-08 12:10:33 +01:00
ip_forward.c ip: Fix data-races around sysctl_ip_fwd_update_priority. 2022-07-15 11:49:55 +01:00
ip_fragment.c inet: inet_defrag: prevent sk release while still in use 2024-04-10 16:28:23 +02:00
ip_gre.c erspan: make sure erspan_base_hdr is present in skb->head 2024-04-10 16:28:27 +02:00
ip_input.c ipv4: ignore dst hint for multipath routes 2023-09-19 12:28:01 +02:00
ip_options.c ipv4: drop fragmentation code from ip_options_build() 2022-01-29 17:53:07 +00:00
ip_output.c net: ipv4: fix a memleak in ip_setup_cork 2024-02-05 20:13:02 +00:00
ip_sockglue.c ipmr: fix kernel panic when forwarding mcast packets 2024-02-05 20:13:00 +00:00
ip_tunnel.c net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv() 2024-03-26 18:20:41 -04:00
ip_tunnel_core.c tunnels: fix out of bounds access when building IPv6 PMTU error 2024-02-16 19:06:26 +01:00
ip_vti.c ip_vti: fix potential slab-use-after-free in decode_session6 2023-08-23 17:52:32 +02:00
ipcomp.c xfrm: ipcomp: add extack to ipcomp{4,6}_init_state 2022-09-29 07:18:00 +02:00
ipconfig.c Driver core / kernfs changes for 6.0-rc1 2022-08-04 11:31:20 -07:00
ipip.c net: Add helper function to parse netlink msg of ip_tunnel_parm 2022-10-03 07:59:06 +01:00
ipmr.c ipmr: fix incorrect parameter validation in the ip_mroute_getsockopt() function 2024-03-26 18:20:42 -04:00
ipmr_base.c ipmr: adopt rcu_read_lock() in mr_dump() 2022-06-24 11:34:38 +01:00
metrics.c ipv4: prevent potential spectre v1 gadget in ip_metrics_convert() 2023-02-01 08:34:45 +01:00
netfilter.c netfilter: Use l3mdev flow key when re-routing mangled packets 2022-05-16 13:03:29 +02:00
netlink.c
…
nexthop.c neighbour: switch to standard rcu, instead of rcu_bh 2023-10-10 22:00:42 +02:00
ping.c ping: Fix potentail NULL deref for /proc/net/icmp. 2023-04-13 16:55:24 +02:00
proc.c tcp: Don't allocate tcp_death_row outside of struct netns_ipv4. 2022-09-20 10:21:49 -07:00
protocol.c
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raw.c ipv4: raw: Fix sending packets from raw sockets via IPsec tunnels 2024-03-26 18:21:00 -04:00
raw_diag.c raw: Fix NULL deref in raw_get_next(). 2023-04-13 16:55:23 +02:00
route.c ipv4/route: avoid unused-but-set-variable warning 2024-04-17 11:18:24 +02:00
syncookies.c tcp: fix cookie_init_timestamp() overflows 2023-11-20 11:51:54 +01:00
sysctl_net_ipv4.c tcp: enforce receive buffer memory limits by allowing the tcp window to shrink 2023-10-19 23:08:54 +02:00
tcp.c tcp: properly terminate timers for kernel sockets 2024-04-10 16:28:21 +02:00
tcp_bbr.c bpf: Switch to new kfunc flags infrastructure 2022-07-21 20:59:42 -07:00
tcp_bic.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_bpf.c tcp_bpf: properly release resources on error paths 2023-10-25 12:03:13 +02:00
tcp_cdg.c Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
tcp_cong.c tcp: Add tracepoint for tcp_set_ca_state 2022-04-07 20:33:15 -07:00
tcp_cubic.c bpf: Switch to new kfunc flags infrastructure 2022-07-21 20:59:42 -07:00
tcp_dctcp.c bpf: Switch to new kfunc flags infrastructure 2022-07-21 20:59:42 -07:00
tcp_dctcp.h
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tcp_diag.c tcp: Access &tcp_hashinfo via net. 2022-09-20 10:21:49 -07:00
tcp_fastopen.c tcp: annotate data-races around fastopenq.max_qlen 2023-07-27 08:50:49 +02:00
tcp_highspeed.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_htcp.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_hybla.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_illinois.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_input.c tcp: do not accept ACK of bytes we never sent 2023-12-13 18:39:11 +01:00
tcp_ipv4.c ipv4, ipv6: Use splice_eof() to flush 2024-01-10 17:10:27 +01:00
tcp_lp.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_metrics.c tcp_metrics: do not create an entry from tcp_init_metrics() 2023-11-20 11:51:53 +01:00
tcp_minisocks.c rds: tcp: Fix use-after-free of net in reqsk_timer_handler(). 2024-03-26 18:20:58 -04:00
tcp_nv.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_offload.c tcp: gso: really support BIG TCP 2023-06-14 11:15:20 +02:00
tcp_output.c net: Remove acked SYN flag from packet in the transmit queue correctly 2023-12-20 17:00:18 +01:00
tcp_rate.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-04-28 13:02:01 -07:00
tcp_recovery.c tcp: fix excessive TLP and RACK timeouts from HZ rounding 2023-10-25 12:03:06 +02:00
tcp_scalable.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_timer.c net: tcp: fix unexcepted socket die when snd_wnd is 0 2023-09-13 09:42:32 +02:00
tcp_ulp.c net/ulp: use consistent error code when blocking ULP 2023-01-24 07:24:43 +01:00
tcp_vegas.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_vegas.h
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tcp_veno.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_westwood.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tcp_yeah.c tcp: add accessors to read/set tp->snd_cwnd 2022-04-06 12:05:41 -07:00
tunnel4.c
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udp.c udp: do not accept non-tunnel GSO skbs landing in a tunnel 2024-04-10 16:28:27 +02:00
udp_bpf.c bpf, sockmap: Fix an infinite loop error when len is 0 in tcp_bpf_recvmsg_parser() 2023-03-17 08:50:24 +01:00
udp_diag.c
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udp_impl.h net: remove noblock parameter from recvmsg() entities 2022-04-12 15:00:25 +02:00
udp_offload.c udp: prevent local UDP tunnel packets from being GROed 2024-04-10 16:28:27 +02:00
udp_tunnel_core.c udp: lockless UDP_ENCAP_L2TPINUDP / UDP_GRO 2024-01-10 17:10:28 +01:00
udp_tunnel_nic.c udp_tunnel: Fix end of loop test in udp_tunnel_nic_unregister() 2022-02-23 12:35:00 +00:00
udp_tunnel_stub.c
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udplite.c udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated(). 2023-05-30 14:03:20 +01:00
xfrm4_input.c udp: annotate data-races around udp->encap_type 2024-01-10 17:10:28 +01:00
xfrm4_output.c
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xfrm4_policy.c net: rename reference+tracking helpers 2022-06-09 21:52:55 -07:00
xfrm4_protocol.c net: xfrm: unexport __init-annotated xfrm4_protocol_init() 2022-06-08 10:10:13 -07:00
xfrm4_state.c
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xfrm4_tunnel.c xfrm: tunnel: add extack to ipip_init_state, xfrm6_tunnel_init_state 2022-09-29 07:18:00 +02:00