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Gentoo Linux: CVE-2022-2601: GRUB: Multiple Vulnerabilities

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Gentoo Linux: CVE-2022-2601: GRUB: Multiple Vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
12/14/2022
Created
11/28/2023
Added
11/27/2023
Modified
11/27/2023

Description

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.

Solution(s)

  • gentoo-linux-upgrade-sys-boot-grub

References

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