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.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, requiring local system access to exploit with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 8 products from gnu, from fedoraproject, from redhat and 5 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2022-12-14T21:15:10.190
2026-06-17T04:42:11.660
Modified
CVSSv3.1: 8.6 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | gnu | grub2 | ≤ 2.06 | Yes |
| Operating System | fedoraproject | fedora | 37 | Yes |
| Operating System | redhat | enterprise_linux_eus | 9.0 | Yes |
| Operating System | redhat | enterprise_linux_for_power_little_endian_eus | 9.0 | Yes |
| Operating System | redhat | enterprise_linux_server_aus | 8.2 | Yes |
| Operating System | redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.1 | Yes |
| Operating System | redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.2 | Yes |
| Operating System | redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 9.0 | Yes |
| Operating System | redhat | enterprise_linux_server_tus | 8.2 | Yes |
| Operating System | redhat | enterprise_linux_server_update_services_for_sap_solutions | 8.1 | Yes |
| Operating System | redhat | enterprise_linux_server_update_services_for_sap_solutions | 8.2 | Yes |
| Operating System | redhat | enterprise_linux_server_update_services_for_sap_solutions | 9.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For gnu's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.