CVSS 3.1
8.6 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HCVE-2022-2601
High (8.6). EPSS 0.5% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-122, CWE-787
- Published
- Modified
- Record from
- the NVD, synced
Affected
- 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_tus
- redhat:enterprise_linux_server_update_services_for_sap_solutions
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0
- 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#c0