From: Florian Westphal <fw@strlen.de>
To: <netdev@vger.kernel.org>
Cc: netfilter-devel@vger.kernel.org,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Paolo Abeni <pabeni@redhat.com>, Florian Westphal <fw@strlen.de>
Subject: [PATCH net-next 0/2] netlink: add range checks for network byte integers
Date: Mon, 5 Sep 2022 12:09:35 +0200 [thread overview]
Message-ID: <20220905100937.11459-1-fw@strlen.de> (raw)
NLA_POLICY_MAX() can be used to let netlink core validate that the given
integer attribute is within the given min-max interval.
Add NLA_POLICY_MAX_BE to allow similar range check on unsigned integers
when those are in network byte order (big endian).
First patch adds the netlink change, second patch adds one user.
Florian Westphal (2):
netlink: introduce NLA_POLICY_MAX_BE
netfilter: nft_payload: reject out-of-range attributes via policy
include/net/netlink.h | 9 +++++++++
lib/nlattr.c | 31 +++++++++++++++++++++++++++----
net/netfilter/nft_payload.c | 6 +++---
3 files changed, 39 insertions(+), 7 deletions(-)
--
2.35.1
next reply other threads:[~2022-09-05 10:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-05 10:09 Florian Westphal [this message]
2022-09-05 10:09 ` [PATCH net-next 1/2] netlink: introduce NLA_POLICY_MAX_BE Florian Westphal
2022-10-27 20:31 ` Jakub Kicinski
2022-10-27 20:36 ` Johannes Berg
2022-10-27 23:35 ` Florian Westphal
2022-10-28 2:39 ` Jakub Kicinski
2022-10-28 10:16 ` Florian Westphal
2022-10-28 16:13 ` Jakub Kicinski
2022-09-05 10:09 ` [PATCH net-next 2/2] netfilter: nft_payload: reject out-of-range attributes via policy Florian Westphal
2022-09-07 11:40 ` [PATCH net-next 0/2] netlink: add range checks for network byte integers patchwork-bot+netdevbpf
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