5.15-stable review patch. If anyone has any objections, please let me know.
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From: Pablo Neira Ayuso pablo@netfilter.org
[ Upstream commit de6843be3082d416eaf2a00b72dad95c784ca980 ]
Skip rebuilding the vlan header when accessing destination and source mac address.
Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Stable-dep-of: 33c563ebf8d3 ("netfilter: nft_payload: skbuff vlan metadata mangle support") Signed-off-by: Sasha Levin sashal@kernel.org --- net/netfilter/nft_payload.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/nft_payload.c b/net/netfilter/nft_payload.c index e5f0d33a27e61..b1745304dbd22 100644 --- a/net/netfilter/nft_payload.c +++ b/net/netfilter/nft_payload.c @@ -127,7 +127,8 @@ void nft_payload_eval(const struct nft_expr *expr, if (!skb_mac_header_was_set(skb) || skb_mac_header_len(skb) == 0) goto err;
- if (skb_vlan_tag_present(skb)) { + if (skb_vlan_tag_present(skb) && + priv->offset >= offsetof(struct ethhdr, h_proto)) { if (!nft_payload_copy_vlan(dest, skb, priv->offset, priv->len)) goto err;