From: Florian Westphal fw@strlen.de
commit 1c702bf902bd37349f6d91cd7f4b372b1e46d0ed upstream.
else we get null deref when one of the attributes is missing, both must be non-null.
Reported-by: syzbot+76d0b80493ac881ff77b@syzkaller.appspotmail.com Fixes: aaecfdb5c5dd8ba ("netfilter: nf_tables: match on tunnel metadata") Signed-off-by: Florian Westphal fw@strlen.de Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- net/netfilter/nft_tunnel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/nft_tunnel.c b/net/netfilter/nft_tunnel.c index 3a15f21..09441bb 100644 --- a/net/netfilter/nft_tunnel.c +++ b/net/netfilter/nft_tunnel.c @@ -56,7 +56,7 @@ static int nft_tunnel_get_init(const struct nft_ctx *ctx, struct nft_tunnel *priv = nft_expr_priv(expr); u32 len;
- if (!tb[NFTA_TUNNEL_KEY] && + if (!tb[NFTA_TUNNEL_KEY] || !tb[NFTA_TUNNEL_DREG]) return -EINVAL;