net: bcmgenet: validate Ethernet address in bcmgenet_set_mac_addr

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bcmgenet_set_mac_addr() did not check whether the provided MAC address is a
valid Ethernet address before applying it. Userspace could configure an
invalid address (such as all zeroes or a multicast address) while the
interface is down.

Add a call to is_valid_ether_addr() and return -EADDRNOTAVAIL if the MAC
address is not valid.

Fixes: 1c1008c793 ("net: bcmgenet: add main driver file")
Reviewed-by: Nicolai Buchwitz <nb@tipi-net.de>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20260921220021.281418-5-florian.fainelli@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Florian Fainelli 2026-09-21 15:00:20 -07:00 • committed by Jakub Kicinski

parent cbbc1aee77

commit 273941c85f

1 changed files with 3 additions and 0 deletions

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drivers/net/ethernet/broadcom/genet/bcmgenet.c

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