Buffer overflow in Gnu Grub2
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 buff…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (30.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Gnu Grub2
- Fedoraproject Fedora — versions 37
- Redhat Enterprise_linux_eus — versions 9.0
- Redhat Enterprise_linux_for_power_little_endian_eus — versions 9.0
- Redhat Enterprise_linux_server_aus — versions 8.2
- Redhat Enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions — versions 8.1, 8.2, 9.0
- Redhat Enterprise_linux_server_tus — versions 8.2
- Redhat Enterprise_linux_server_update_services_for_sap_solutions — versions 8.1, 8.2, 9.0
- N/a Grub2 — versions grub2 2.06 and lower
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Third Party Advisory, Issue Tracking)
- secalert@redhat.com
- secalert@redhat.com (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-2601?
- CVE-2022-2601 is a high-severity vulnerability in Gnu Grub2, classified under Heap-based Buffer Overflow. CVSS score: 8.6/10. Published 2022-12-14.
- How severe is CVE-2022-2601?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2022-2601 known to be exploited?
- 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.