mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

netfilter: nft_fwd_netdev: validate family and chain type 

commit 76a109fac2 upstream.

Make sure the forward action is only used from ingress.

Fixes: 39e6dea28a ("netfilter: nf_tables: add forward expression to the netdev family")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pablo Neira Ayuso 2020-03-23 14:27:16 +01:00 committed by Greg Kroah-Hartman
parent dc0ea9b710
commit ba2bc76526
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
net/netfilter/nft_fwd_netdev.c
View File

@ -62,6 +62,13 @@ nla_put_failure:
return -1;
}
static int nft_fwd_validate(const struct nft_ctx *ctx,
const struct nft_expr *expr,
const struct nft_data **data)
{
return nft_chain_validate_hooks(ctx->chain, (1 << NF_NETDEV_INGRESS));
}
static struct nft_expr_type nft_fwd_netdev_type;
static const struct nft_expr_ops nft_fwd_netdev_ops = {
.type = &nft_fwd_netdev_type,
@ -69,6 +76,7 @@ static const struct nft_expr_ops nft_fwd_netdev_ops = {
.eval = nft_fwd_netdev_eval,
.init = nft_fwd_netdev_init,
.dump = nft_fwd_netdev_dump,
.validate = nft_fwd_validate,
};
static struct nft_expr_type nft_fwd_netdev_type __read_mostly = {