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c4c07b4d6f
linux-next/net/ipv4/netfilter
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Jann Horn c4c07b4d6f netfilter: nf_nat_snmp_basic: add missing length checks in ASN.1 cbs 
The generic ASN.1 decoder infrastructure doesn't guarantee that callbacks
will get as much data as they expect; callbacks have to check the `datalen`
parameter before looking at `data`. Make sure that snmp_version() and
snmp_helper() don't read/write beyond the end of the packet data.

(Also move the assignment to `pdata` down below the check to make it clear
that it isn't necessarily a pointer we can use before the `datalen` check.)

Fixes: cc2d58634e ("netfilter: nf_nat_snmp_basic: use asn1 decoder library")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2019-02-11 17:43:17 +01:00
..
arp_tables.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2018-03-30 11:41:18 -04:00
arpt_mangle.c netfilter: arpt_mangle: fix return values of checkentry 2011-02-01 16:03:46 +01:00
arptable_filter.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ip_tables.c netfilter: x_tables: set module owner for icmp(6) matches 2018-07-05 11:45:11 +02:00
ipt_ah.c netfilter: ipt_ah: return boolean instead of integer 2018-03-05 23:15:43 +01:00
ipt_CLUSTERIP.c netfilter: ipt_CLUSTERIP: fix warning unused variable cn 2019-01-28 11:09:12 +01:00
ipt_ECN.c netfilter: x_tables: use pr ratelimiting in all remaining spots 2018-02-14 21:05:38 +01:00
ipt_MASQUERADE.c netfilter: add missing error handling code for register functions 2018-11-27 00:35:19 +01:00
ipt_REJECT.c netfilter: x_tables: use pr ratelimiting in all remaining spots 2018-02-14 21:05:38 +01:00
ipt_rpfilter.c netfilter: rpfilter: Convert rpfilter_lookup_reverse to new dev helper 2018-09-20 20:01:52 -07:00
ipt_SYNPROXY.c netfilter: ctnetlink: synproxy support 2018-03-20 14:39:31 +01:00
iptable_filter.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
iptable_mangle.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
iptable_nat.c netfilter: nf_nat: add nat type hooks to nat core 2018-05-23 09:14:06 +02:00
iptable_raw.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
iptable_security.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
Kconfig netfilter: nat: remove l4proto->manip_pkt 2018-12-17 23:33:29 +01:00
Makefile netfilter: nat: remove nf_nat_l4proto struct 2018-12-17 23:33:31 +01:00
nf_defrag_ipv4.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
nf_dup_ipv4.c netfilter: kill the fake untracked conntrack objects 2017-04-15 11:47:57 +02:00
nf_flow_table_ipv4.c netfilter: nf_flow_table: move init code to nf_flow_table_core.c 2018-04-24 10:28:45 +02:00
nf_log_arp.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
nf_log_ipv4.c netfilter: check if the socket netns is correct. 2018-06-28 22:21:32 +09:00
nf_nat_h323.c netfilter: add NAT support for shifted portmap ranges 2018-04-24 10:29:12 +02:00
nf_nat_l3proto_ipv4.c netfilter: nat: remove nf_nat_l4proto struct 2018-12-17 23:33:31 +01:00
nf_nat_masquerade_ipv4.c netfilter: nat: fix double register in masquerade modules 2018-11-27 00:36:46 +01:00
nf_nat_pptp.c netfilter: nat: remove l4proto->manip_pkt 2018-12-17 23:33:29 +01:00
nf_nat_snmp_basic_main.c netfilter: nf_nat_snmp_basic: add missing length checks in ASN.1 cbs 2019-02-11 17:43:17 +01:00
nf_nat_snmp_basic.asn1 netfilter: nf_nat_snmp_basic: use asn1 decoder library 2018-01-19 13:59:07 +01:00
nf_reject_ipv4.c netfilter: avoid using skb->nf_bridge directly 2018-12-19 11:21:37 -08:00
nf_socket_ipv4.c netfilter: nf_socket: Fix out of bounds access in nf_sk_lookup_slow_v{4,6} 2018-03-24 21:17:14 +01:00
nf_tproxy_ipv4.c netfilter: nf_tproxy: fix possible non-linear access to transport header 2018-07-06 14:32:44 +02:00
nft_chain_nat_ipv4.c netfilter: nf_nat: add nat type hooks to nat core 2018-05-23 09:14:06 +02:00
nft_chain_route_ipv4.c netfilter: nf_tables: nft_register_chain_type() returns void 2018-03-30 11:29:18 +02:00
nft_dup_ipv4.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-15 10:54:36 -05:00
nft_fib_ipv4.c netfilter: nft_fib: Convert nft_fib4_eval to new dev helper 2018-09-20 20:01:53 -07:00
nft_masq_ipv4.c netfilter: add missing error handling code for register functions 2018-11-27 00:35:19 +01:00
nft_redir_ipv4.c netfilter: nf_tables: fix mismatch in big-endian system 2017-03-13 13:30:28 +01:00
nft_reject_ipv4.c netfilter: nf_tables: use hook state from xt_action_param structure 2016-11-03 11:52:34 +01:00