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linux/net/ipv4/netfilter
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Florian Westphal 21a673bddc netfilter: tproxy: bail out if IP has been disabled on the device 
syzbot reports:
general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
[..]
RIP: 0010:nf_tproxy_laddr4+0xb7/0x340 net/ipv4/netfilter/nf_tproxy_ipv4.c:62
Call Trace:
 nft_tproxy_eval_v4 net/netfilter/nft_tproxy.c:56 [inline]
 nft_tproxy_eval+0xa9a/0x1a00 net/netfilter/nft_tproxy.c:168

__in_dev_get_rcu() can return NULL, so check for this.

Reported-and-tested-by: syzbot+b94a6818504ea90d7661@syzkaller.appspotmail.com
Fixes: cc6eb43385 ("tproxy: use the interface primary IP address as a default value for --on-ip")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2024-05-29 00:37:51 +02:00
..
arp_tables.c netfilter: complete validation of user input 2024-04-10 19:42:56 -07:00
arpt_mangle.c
arptable_filter.c
ip_tables.c netfilter: complete validation of user input 2024-04-10 19:42:56 -07:00
ipt_ah.c
ipt_ECN.c
ipt_REJECT.c
ipt_rpfilter.c netfilter: rpfilter/fib: Set ->flowic_uid correctly for user namespaces. 2022-10-19 08:46:48 +02:00
ipt_SYNPROXY.c
iptable_filter.c netfilter: use NF_DROP instead of -NF_DROP 2024-05-06 16:29:21 +02:00
iptable_mangle.c netfilter: xt_mangle: only check verdict part of return value 2023-10-18 10:26:43 +02:00
iptable_nat.c netfilter: add missing module descriptions 2023-11-08 13:52:32 +01:00
iptable_raw.c netfilter: add missing module descriptions 2023-11-08 13:52:32 +01:00
iptable_security.c
Kconfig netfilter: arptables: Select NETFILTER_FAMILY_ARP when building arp_tables.c 2024-03-28 03:54:02 +01:00
Makefile netfilter: xtables: allow xtables-nft only builds 2024-01-29 15:43:21 +01:00
nf_defrag_ipv4.c netfilter: add missing module descriptions 2023-11-08 13:52:32 +01:00
nf_dup_ipv4.c
nf_nat_h323.c netfilter: nat: move repetitive nat port reserve loop to a helper 2022-09-07 16:46:04 +02:00
nf_nat_pptp.c
nf_nat_snmp_basic_main.c
nf_nat_snmp_basic.asn1 treewide: Add SPDX identifier to IETF ASN.1 modules 2023-10-27 18:04:28 +08:00
nf_reject_ipv4.c netfilter: bridge: replace physindev with physinif in nf_bridge_info 2024-01-17 12:02:49 +01:00
nf_socket_ipv4.c tcp: Access &tcp_hashinfo via net. 2022-09-20 10:21:49 -07:00
nf_tproxy_ipv4.c netfilter: tproxy: bail out if IP has been disabled on the device 2024-05-29 00:37:51 +02:00
nft_dup_ipv4.c netfilter: nf_tables: Extend nft_expr_ops::dump callback parameters 2022-11-15 10:46:34 +01:00
nft_fib_ipv4.c netfilter: rpfilter/fib: clean up some inconsistent indenting 2022-11-15 10:53:18 +01:00
nft_reject_ipv4.c netfilter: nf_tables: do not reduce read-only expressions 2022-03-20 00:29:46 +01:00