CVE-2022-2601

Name: CVE-2022-2601
Creator: NVD / NIST
Published: 2022-12-14T21:15:10.19+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2022-2601 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. 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. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.6/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.51%

39.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gnu	Grub2	<= 2.06
Fedoraproject	Fedora	37
Redhat	Enterprise Linux Eus	9.0
Redhat	Enterprise Linux For Power Little Endian Eus	9.0
Redhat	Enterprise Linux Server Aus	8.2
Redhat	Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions	8.1
Redhat	Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions	8.2
Redhat	Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions	9.0
Redhat	Enterprise Linux Server Tus	8.2
Redhat	Enterprise Linux Server Update Services For Sap Solutions	8.1
Redhat	Enterprise Linux Server Update Services For Sap Solutions	8.2
Redhat	Enterprise Linux Server Update Services For Sap Solutions	9.0

References

https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0Issue Tracking, Third Party Advisory
https://security.gentoo.org/glsa/202311-14
https://security.netapp.com/advisory/ntap-20230203-0004/
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#c0Issue Tracking, Third Party Advisory
https://security.gentoo.org/glsa/202311-14
https://security.netapp.com/advisory/ntap-20230203-0004/

Timeline

Published: Dec 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-2601?

How severe is CVE-2022-2601?

CVE-2022-2601 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2022-2601?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-2601?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST