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.
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: redhat

Published: 2022-12-19T00:00:00

Updated: 2023-11-25T12:06:19.532925

Reserved: 2022-10-31T00:00:00


Link: CVE-2022-3775

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2022-12-19T20:15:11.427

Modified: 2023-11-25T12:15:07.270


Link: CVE-2022-3775

JSON object: View

cve-icon Redhat Information

No data.

CWE