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Status published
Unknown
CVE-2022-3775
When rendering certain unicode sequences, grub2's font code doesn't proper...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
Affected Software
grub2
Vulnerable Versions:
All up to 2.06
Timeline
Official Publish:
December 19th, 2022
Last Modified:
May 27th, 2026
Added to House:
July 21st, 2026
CVSS Vectors
No vector data available