From: Florian Westphal <fw@strlen.de>
To: Hyunwoo Kim <imv4bel@gmail.com>
Cc: pablo@netfilter.org, phil@nwl.cc, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
horms@kernel.org, netfilter-devel@vger.kernel.org,
coreteam@netfilter.org, netdev@vger.kernel.org
Subject: Re: [PATCH net] netfilter: nf_conntrack_sctp: validate state value in nlattr_to_sctp()
Date: Sat, 7 Mar 2026 19:24:00 +0100 [thread overview]
Message-ID: <aaxtQA0BbpqTo5t1@strlen.de> (raw)
In-Reply-To: <aaxe43_A7rqHezJz@v4bel>
Hyunwoo Kim <imv4bel@gmail.com> wrote:
> diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
> index 7c6f7c9f7332..cbee99be7b5e 100644
> --- a/net/netfilter/nf_conntrack_proto_sctp.c
> +++ b/net/netfilter/nf_conntrack_proto_sctp.c
> @@ -612,6 +612,9 @@ static int nlattr_to_sctp(struct nlattr *cda[], struct nf_conn *ct)
> !tb[CTA_PROTOINFO_SCTP_VTAG_REPLY])
> return -EINVAL;
>
> + if (nla_get_u8(tb[CTA_PROTOINFO_SCTP_STATE]) >= SCTP_CONNTRACK_MAX)
> + return -EINVAL;
Like other, similar bug classes, I would prefer this to be solved via
netlink policy fixup.
next prev parent reply other threads:[~2026-03-07 18:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-07 17:22 [PATCH net] netfilter: nf_conntrack_sctp: validate state value in nlattr_to_sctp() Hyunwoo Kim
2026-03-07 18:24 ` Florian Westphal [this message]
2026-03-08 10:42 ` Pablo Neira Ayuso
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