From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 10/23] netfilter: nft_meta: fix lack of validation of the input register
Date: Fri, 10 Jan 2014 01:35:29 +0100 [thread overview]
Message-ID: <1389314142-17969-11-git-send-email-pablo@netfilter.org> (raw)
In-Reply-To: <1389314142-17969-1-git-send-email-pablo@netfilter.org>
We have to validate that the input register is in the range of
allowed registers, otherwise we can take a incorrect register
value as input that may lead us to a crash.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nft_meta.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index b43975a..e8254ad 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -239,6 +239,9 @@ static int nft_meta_init(const struct nft_ctx *ctx, const struct nft_expr *expr,
return err;
priv->sreg = ntohl(nla_get_be32(tb[NFTA_META_SREG]));
+ err = nft_validate_input_register(priv->sreg);
+ if (err < 0)
+ return err;
return 0;
}
--
1.7.10.4
next prev parent reply other threads:[~2014-01-10 0:35 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-10 0:35 [PATCH 00/23] nf_tables updates for net-next Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 01/23] netfilter: nft_reject: fix compilation warning if NF_TABLES_IPV6 is disabled Pablo Neira Ayuso
2014-01-10 20:33 ` Sergei Shtylyov
2014-01-10 19:39 ` David Miller
2014-01-10 0:35 ` [PATCH 02/23] netfilter: nf_tables: make chain types override the default AF functions Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 03/23] netfilter: nf_tables: add hook ops to struct nft_pktinfo Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 04/23] netfilter: nf_tables: add support for multi family tables Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 05/23] netfilter: nf_tables: add "inet" table for IPv4/IPv6 Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 06/23] netfilter: nf_tables: add nfproto support to meta expression Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 07/23] netfilter: nft_meta: add l4proto support Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 08/23] netfilter: nft_ct: load both IPv4 and IPv6 conntrack modules for NFPROTO_INET Pablo Neira Ayuso
2014-01-10 20:40 ` Sergei Shtylyov
2014-01-10 19:42 ` Patrick McHardy
2014-01-10 19:48 ` David Miller
2014-01-10 19:59 ` Patrick McHardy
2014-01-10 0:35 ` [PATCH 09/23] netfilter: nft_ct: Add support to set the connmark Pablo Neira Ayuso
2014-01-10 0:35 ` Pablo Neira Ayuso [this message]
2014-01-10 0:35 ` [PATCH 11/23] netfilter: nf_tables: split chain policy validation from actually setting it Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 12/23] netfilter: nf_tables: restore chain change atomicity Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 13/23] netfilter: nf_tables: fix check for table overflow Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 14/23] netfilter: nf_tables: fix chain type module reference handling Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 15/23] netfilter: nf_tables: add missing module references to chain types Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 16/23] netfilter: nf_tables: replay request after dropping locks to load chain type Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 17/23] netfilter: nf_tables: constify chain type definitions and pointers Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 18/23] netfilter: nf_tables: minor nf_chain_type cleanups Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 19/23] netfilter: nf_tables: perform flags validation before table allocation Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 20/23] netfilter: nf_tables: take AF module reference when creating a table Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 21/23] netfilter: nf_tables: prohibit deletion of a table with existing sets Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 22/23] netfilter: nf_tables: rename nft_do_chain_pktinfo() to nft_do_chain() Pablo Neira Ayuso
2014-01-10 0:35 ` [PATCH 23/23] netfilter: nf_tables: fix error path in the init functions Pablo Neira Ayuso
2014-01-10 2:36 ` [PATCH 00/23] nf_tables updates for net-next David Miller
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