Commit 1c702bf9 authored by Florian Westphal's avatar Florian Westphal Committed by Pablo Neira Ayuso

netfilter: nft_tunnel: fix null-attribute check

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: aaecfdb5 ("netfilter: nf_tables: match on tunnel metadata")
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent ec7470b8
...@@ -76,7 +76,7 @@ static int nft_tunnel_get_init(const struct nft_ctx *ctx, ...@@ -76,7 +76,7 @@ static int nft_tunnel_get_init(const struct nft_ctx *ctx,
struct nft_tunnel *priv = nft_expr_priv(expr); struct nft_tunnel *priv = nft_expr_priv(expr);
u32 len; u32 len;
if (!tb[NFTA_TUNNEL_KEY] && if (!tb[NFTA_TUNNEL_KEY] ||
!tb[NFTA_TUNNEL_DREG]) !tb[NFTA_TUNNEL_DREG])
return -EINVAL; return -EINVAL;
......
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