Commit 12d448d8 authored by Pablo Neira Ayuso's avatar Pablo Neira Ayuso Committed by Lu Wei
Browse files

netfilter: nf_tables: skip immediate deactivate in _PREPARE_ERROR

mainline inclusion
from mainline-v6.5-rc4
commit 0a771f7b
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I7YIXO
CVE: CVE-2022-40982

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a771f7b266b02d262900c75f1e175c7fe76fec2



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On error when building the rule, the immediate expression unbinds the
chain, hence objects can be deactivated by the transaction records.

Otherwise, it is possible to trigger the following warning:

 WARNING: CPU: 3 PID: 915 at net/netfilter/nf_tables_api.c:2013 nf_tables_chain_destroy+0x1f7/0x210 [nf_tables]
 CPU: 3 PID: 915 Comm: chain-bind-err- Not tainted 6.1.39 #1
 RIP: 0010:nf_tables_chain_destroy+0x1f7/0x210 [nf_tables]

Fixes: 4bedf9ee ("netfilter: nf_tables: fix chain binding transaction logic")
Reported-by: default avatarKevin Rich <kevinrich1337@gmail.com>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>

conflict:
	net/netfilter/nft_immediate.c

Signed-off-by: default avatarLu Wei <luwei32@huawei.com>
parent e85c5093
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