From PC World: Many PC users with Windows-and-Linux dual-boot setups woke up to a scary message this week: “Something has gone seriously wrong.”
Apparently, the latest patch to Windows 10 and Windows 11 seems to damage secondary Linux installations when the Secure Boot feature is enabled. Affected users are able to get Windows up and running, but their Linux installations are left inoperable.
According to a report from Ars Technica, a large number of Linux users across popular distros are impacted. Initial investigations point the finger at a fix for CVE-2022-2601, a 2022 vulnerability that could allow hackers to access systems even when Secure Boot is enabled. The patch seems to have worked on standard Windows installations without issue.
Microsoft’s documentation for the patch said that dual-boot setups with recent versions of Linux that are up-to-date shouldn’t be affected. Quoting the FAQ from the relevant page:
“The SBAT value is not applied to dual-boot systems that boot both Windows and Linux and should not affect these systems. You might find that older Linux distribution ISOs will not boot. If this occurs, work with your Linux vendor to get an update.”
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