diff options
| author | Murali Karicheri <m-karicheri2@ti.com> | 2020-07-17 17:55:10 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-18 04:54:37 +0300 |
| commit | eea9f73e1ff9b99fbb937d41bb07c5bb2ae9ea2f (patch) | |
| tree | b5fa023619bb3a17ba4b78e53582c0f4f75e1ab1 | |
| parent | 6d6148bc78d2f002ecc67b801c5f55a0cc5184c8 (diff) | |
| download | linux-eea9f73e1ff9b99fbb937d41bb07c5bb2ae9ea2f.tar.xz | |
net: hsr: validate address B before copying to skb
Validate MAC address before copying the same to outgoing frame
skb destination address. Since a node can have zero mac
address for Link B until a valid frame is received over
that link, this fix address the issue of a zero MAC address
being in the packet.
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/hsr/hsr_framereg.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c index 03b891904314..530de24b1fb5 100644 --- a/net/hsr/hsr_framereg.c +++ b/net/hsr/hsr_framereg.c @@ -325,7 +325,8 @@ void hsr_addr_subst_dest(struct hsr_node *node_src, struct sk_buff *skb, if (port->type != node_dst->addr_B_port) return; - ether_addr_copy(eth_hdr(skb)->h_dest, node_dst->macaddress_B); + if (is_valid_ether_addr(node_dst->macaddress_B)) + ether_addr_copy(eth_hdr(skb)->h_dest, node_dst->macaddress_B); } void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port, |