August 23, 2024 By Sergiu Gatlan
Microsoft has provided a workaround to temporarily fix a known issue that is blocking Linux from booting on dual-boot systems with Secure Boot enabled.
The company says this temporary fix can help Linux users revive unbootable systems displaying "Something has gone seriously wrong: SBAT self-check failed: Security Policy Violation" errors after installing the August 2024 Windows security updates.
Many Linux users confirmed they were affected by this known issue following this month's Patch Tuesday, as BleepingComputer reported on Tuesday.
Those affected said that their systems (running a wide range of distros, including but not limited to Ubuntu, Linux Mint, Zorin OS, and Puppy Linux) stopped booting into Linux after installing this month's Windows cumulative updates.
The issue is triggered by a Secure Boot Advanced Targeting (SBAT) update designed to block UEFI shim bootloaders vulnerable to exploits targeting the CVE-2022-2601 GRUB2 Secure Boot bypass. When it released the update, Microsoft said the update would not be delivered to devices where dual booting is detected.
