Use After Free The advisory has been revoked - it doesn't affect any version of package grub2 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-GRUB2-6592940
- published9 Apr 2024
- disclosed5 Apr 2024
- creditUnknown
Introduced: 5 Apr 2024
CVE-2024-2312 (opens in a new tab)Amendment
This was deemed not a vulnerability.
Overview
Affected versions of this package are vulnerable to Use After Free due to the improper handling of module finalization functions upon the exit command. Specifically, the failure to call module fini functions leads to the peimage module not releasing UEFI system table hooks properly. This potentially allows an attacker to bypass secure boot mechanisms by exploiting the lingering hooks.
Note:
This issue stems from Debian/Ubuntu's peimage grub2 module, the upstream Gnu grub2 is not affected.