tree 36b83086eed1daaa7e2805cab620da9ba2a0110a
parent ca873ea8026bf5d632f75f32a91a6337fc214042
author Pablo Neira Ayuso <pablo@netfilter.org> 1690123308 +0200
committer He Gao <hegao@google.com> 1692383147 +0000

netfilter: nf_tables: disallow rule addition to bound chain via NFTA_RULE_CHAIN_ID

[ Upstream commit 0ebc1064e4874d5987722a2ddbc18f94aa53b211 ]

Bail out with EOPNOTSUPP when adding rule to bound chain via
NFTA_RULE_CHAIN_ID. The following warning splat is shown when
adding a rule to a deleted bound chain:

 WARNING: CPU: 2 PID: 13692 at net/netfilter/nf_tables_api.c:2013 nf_tables_chain_destroy+0x1f7/0x210 [nf_tables]
 CPU: 2 PID: 13692 Comm: chain-bound-rul Not tainted 6.1.39 #1
 RIP: 0010:nf_tables_chain_destroy+0x1f7/0x210 [nf_tables]

BUG=b/296200356
TEST=presubmit
SOURCE=UPSTREAM(0ebc1064e487)
RELEASE_NOTE=Fixed CVE-2023-4147 in the Linux kernel.

cos-patch: security-high
Fixes: d0e2c7de92c7 ("netfilter: nf_tables: add NFT_CHAIN_BINDING")
Reported-by: Kevin Rich <kevinrich1337@gmail.com>
Change-Id: I05651e01101695c0c960f04348007410395c79f8
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/55327
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>