GRUB, a popular boot loader used by Unix-based operating systems, has fixed multiple high severity vulnerabilities. In 2020, BleepingComputer had reported on the BootHole vulnerability in GRUB2 that could have let attackers compromise an operating system’s booting process even if the Secure Boot verification mechanism was active. This week GRUB project maintainers have released hundreds of upstream patches for the severe boot loader flaws listed below. The list of vulnerabilities and CVEs that were remedied comprises 117 patches.
Source: https://www.bleepingcomputer.com/news/security/grub2-boot-loader-reveals-multiple-high-severity-vulnerabilities/