CVE-2022-2601

HIGHNVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2022-12-14. NVD baseline CVSS 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, nvd
8.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.6Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
8.6
EG Score
8.6(medium)
EPSS
40.4%
KEV
Not listed

Published

December 14, 2022

Last Modified

May 27, 2026

Advisory Details (4)

Auto-updated Jun 3, 2026
Patch available. Sources: redhat.
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20230203-0004/
generic

GRUB: Multiple Vulnerabilities (GLSA 202311-14) — Gentoo security

https://security.gentoo.org/glsa/202311-14
redhat Patch Available

2112975 – (CVE-2022-2601) CVE-2022-2601 grub2: Buffer overflow in grub_font_construct_glyph() can lead to out-of-bound write and possible secure boot bypass

Affected: Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0
generic

“Something has gone seriously wrong,” dual-boot systems warn after Microsoft update - Ars Technica

https://arstechnica.com/security/2024/08/a-patch-microsoft-spent-2-years-preparing-is-making-a-mess-for-some-linux-users/

Vendor Advisories for CVE-2022-2601(9)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatgrub2-1:2.02-0.87.el7_9.142024-04-23redhat
redhatgrub2-1:2.06-46.el9_1.32023-02-14redhat
redhatgrub2-1:2.02-99.el8_4.102023-01-09redhat
redhatgrub2-1:2.02-123.el8_6.122023-01-09redhat
redhatgrub2-1:2.02-142.el8_7.12023-01-09redhat
redhatgrub2-1:2.06-27.el9_0.122022-12-13redhat
redhatgrub2-1:2.02-87.el8_2.112022-12-06redhat
redhatgrub2-1:2.02-87.el8_1.112022-11-16redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 108 total refreshes for this CVE.

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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2022-2601?
CVE-2022-2601 is a high vulnerability published on December 14, 2022. A buffer overflow was found in grubfontconstructglyph(). A malicious crafted pf2 font can lead to an overflow when calculating the maxglyph_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…
When was CVE-2022-2601 disclosed?
CVE-2022-2601 was first published in the National Vulnerability Database on December 14, 2022, with the most recent update on May 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-2601 actively exploited?
CVE-2022-2601 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 40.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-2601?
CVE-2022-2601 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2022-2601?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-2601, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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