Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package grub2-pc (opens in a new tab)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-RHEL9-GRUB2PC-12325903
- published1 Sept 2025
- disclosed15 Nov 2022
Introduced: 15 Nov 2022
CVE-2022-2601 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream grub2-pc package and not the grub2-pc package as distributed by RHEL.
A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.
References
- https://access.redhat.com/security/cve/CVE-2022-2601
- https://access.redhat.com/errata/RHSA-2023:0752
- https://arstechnica.com/security/2024/08/a-patch-microsoft-spent-2-years-preparing-is-making-a-mess-for-some-linux-users/
- https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0
- https://security.gentoo.org/glsa/202311-14
- https://security.netapp.com/advisory/ntap-20230203-0004/