CVE-2024-2312 Affecting grub2-signed package, versions <1.202


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-UBUNTU2410-GRUB2SIGNED-8192441
  • published15 Oct 2024
  • disclosed5 Apr 2024

Introduced: 5 Apr 2024

CVE-2024-2312  (opens in a new tab)

How to fix?

Upgrade Ubuntu:24.10 grub2-signed to version 1.202 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-signed package and not the grub2-signed package as distributed by Ubuntu. See How to fix? for Ubuntu:24.10 relevant fixed versions and status.

GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks after exit. This lead to a use-after-free condition, and could possibly lead to secure boot bypass.

CVSS Scores

version 3.1