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Microsoft waited 6 months to patch actively exploited admin-to-kernel vulnerability
(www.theregister.com)
This is a most excellent place for technology news and articles.
Generally yes. For many distros, the kernel signing key is with the distro maintainers and so the package comes with pre-signed kernel images. For distros like Arch and Gentoo, it's the user's responsibility to maintain the signing key and sign each updated kernel
So why can’t root add new keys?