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CVE-2022-3775

7.1 HIGH

When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrain...

Published: 2022-12-19 · Last updated: 2026-05-27

Severity and scoring

CVSS
7.1 HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE
CWE-787

Affected products

VendorProduct
gnuenterprise_linux, grub2
redhatenterprise_linux, grub2

Description

When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.

Source: NVD

References

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