linux/include/net/netfilter
Saeed Mirzamohammadi 31cc578ae2 netfilter: nftables_offload: KASAN slab-out-of-bounds Read in nft_flow_rule_create
This patch fixes the issue due to:

BUG: KASAN: slab-out-of-bounds in nft_flow_rule_create+0x622/0x6a2
net/netfilter/nf_tables_offload.c:40
Read of size 8 at addr ffff888103910b58 by task syz-executor227/16244

The error happens when expr->ops is accessed early on before performing the boundary check and after nft_expr_next() moves the expr to go out-of-bounds.

This patch checks the boundary condition before expr->ops that fixes the slab-out-of-bounds Read issue.

Add nft_expr_more() and use it to fix this problem.

Signed-off-by: Saeed Mirzamohammadi <saeed.mirzamohammadi@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-10-20 13:54:54 +02:00
..
ipv4
ipv6
br_netfilter.h
nf_conntrack_acct.h netfilter: conntrack: add nf_ct_acct_add() 2020-03-30 02:05:39 +02:00
nf_conntrack_bridge.h
nf_conntrack_core.h
nf_conntrack_count.h
nf_conntrack_ecache.h
nf_conntrack_expect.h
nf_conntrack_extend.h netfilter: Replace zero-length array with flexible-array member 2020-03-15 15:20:16 +01:00
nf_conntrack_helper.h treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
nf_conntrack_l4proto.h netfilter: ctnetlink: add kernel side filtering for dump 2020-05-27 22:20:34 +02:00
nf_conntrack_labels.h
nf_conntrack_seqadj.h
nf_conntrack_synproxy.h
nf_conntrack_timeout.h netfilter: Replace zero-length array with flexible-array member 2020-03-15 15:20:16 +01:00
nf_conntrack_timestamp.h
nf_conntrack_tuple.h
nf_conntrack_zones.h
nf_conntrack.h A set of locking fixes and updates: 2020-08-10 19:07:44 -07:00
nf_dup_netdev.h
nf_flow_table.h netfilter: flowtable: Make nf_flow_table_offload_add/del_cb inline 2020-06-15 18:06:52 -07:00
nf_log.h netfilter: nf_log: missing vlan offload tag and proto 2020-10-14 01:25:14 +02:00
nf_nat_helper.h
nf_nat_masquerade.h
nf_nat_redirect.h
nf_nat.h
nf_queue.h netfilter: nf_queue: place bridge physports into queue_entry struct 2020-03-29 16:28:29 +02:00
nf_reject.h
nf_socket.h
nf_synproxy.h
nf_tables_core.h netfilter: nf_tables: Implement fast bitwise expression 2020-10-04 21:08:33 +02:00
nf_tables_ipv4.h netfilter: nf_tables: add inet ingress support 2020-10-12 01:57:34 +02:00
nf_tables_ipv6.h netfilter: nf_tables: add inet ingress support 2020-10-12 01:57:34 +02:00
nf_tables_offload.h
nf_tables.h netfilter: nftables_offload: KASAN slab-out-of-bounds Read in nft_flow_rule_create 2020-10-20 13:54:54 +02:00
nf_tproxy.h
nft_fib.h
nft_meta.h
nft_reject.h
xt_rateest.h