Upstream linux-firmware package contains outdated and vulnerable Wi-Fi drivers

Created by: zhuowei

Alpine's linux-firmware package pulls from the upstream linux-firmware repo: the Wi-Fi drivers available there are very old. For example, the BCM4358 firmware available there was built in September 2016 and is vulnerable to Broadpwn. This is a problem as four devices use the outdated linux-firmware blobs.

Should we use manufacturer Wi-Fi firmware or AOSP firmware if they are newer, or somehow get Broadcom to release updated Wi-Fi drivers to the linux-firmware repo?