CVE-2022-2601
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.
Key facts
- CVSS score
- 8.6 (v3.1)
- Severity
- HIGH
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H- Weakness (CWE)
- CWE-122
- EPSS score
- 0.5% (42th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2022-34848)
- Published
- December 14, 2022
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2022-34848 in the EU Vulnerability Database. Last updated in EUVD on May 27, 2026.
View on the EU Vulnerability DatabaseAffected products
- fedoraproject / fedora
- gnu / grub2
- redhat / enterprise linux eus
- redhat / enterprise linux for power little endian eus
- redhat / enterprise linux server aus
- redhat / enterprise linux server for power little endian update services for sap solutions
- redhat / enterprise linux server for power little endian update services for sap solutions
- redhat / enterprise linux server for power little endian update services for sap solutions
- redhat / enterprise linux server tus
- redhat / enterprise linux server update services for sap solutions
- redhat / enterprise linux server update services for sap solutions
- redhat / enterprise linux server update services for sap solutions
Certified products that may be affected
3 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Red Hat Enterprise Linux 9.0 EUS - Red Hat, Inc. - Common Criteria CCEVS-VR-VID-11379-2024 - archived
- Red Hat Enterprise Linux 8.2 - Red Hat, Inc. - Common Criteria CCEVS-VR-11202-2022 - archived
- Red Hat Enterprise Linux 8.1 - Red Hat, Inc. - Common Criteria CCEVS-VR-VID-11107-2021 - archived
References
- 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(Issue Tracking, Third Party Advisory)
- https://security.gentoo.org/glsa/202311-14
- https://security.netapp.com/advisory/ntap-20230203-0004/
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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