Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 22.0%
CVSS Severity
CVSS v3 Score 8.6
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
- https://security.gentoo.org/glsa/202311-14
- https://security.netapp.com/advisory/ntap-20230203-0004/
Products affected by CVE-2022-2601
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cpe:2.3:a:gnu:grub2:-
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cpe:2.3:a:gnu:grub2:1.98
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cpe:2.3:a:gnu:grub2:1.99
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cpe:2.3:a:gnu:grub2:2.00
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cpe:2.3:a:gnu:grub2:2.01
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cpe:2.3:a:gnu:grub2:2.02
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cpe:2.3:a:gnu:grub2:2.04
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cpe:2.3:a:gnu:grub2:2.06
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cpe:2.3:o:fedoraproject:fedora:37
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cpe:2.3:o:redhat:enterprise_linux_eus:9.0
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cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0
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cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2
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Redhat » Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions » Version: 8.1cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1
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Redhat » Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions » Version: 8.2cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2
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Redhat » Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions » Version: 9.0cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.0
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cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2
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cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.1
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cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2
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cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:9.0