From: Florian Westphal fw@strlen.de
[ Upstream commit 9ec22d7c6c69146180577f3ad5fdf504beeaee62 ]
Fixes: af308b94a2a4a5 ("netfilter: nf_tables: add tunnel support") Signed-off-by: Florian Westphal fw@strlen.de Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- net/netfilter/nft_tunnel.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/net/netfilter/nft_tunnel.c b/net/netfilter/nft_tunnel.c index 09441bb..e5444f3 100644 --- a/net/netfilter/nft_tunnel.c +++ b/net/netfilter/nft_tunnel.c @@ -235,6 +235,9 @@ static int nft_tunnel_obj_erspan_init(const struct nlattr *attr, if (err < 0) return err;
+ if (!tb[NFTA_TUNNEL_KEY_ERSPAN_VERSION]) + return -EINVAL; + version = ntohl(nla_get_be32(tb[NFTA_TUNNEL_KEY_ERSPAN_VERSION])); switch (version) { case ERSPAN_VERSION: