Integer Overflow Vulnerability in GRUB2 Affects Red Hat Products
CVE-2025-0678
7.8HIGH
Summary
A flaw in GRUB2's squash4 filesystem module allows user-controlled parameters to affect buffer size calculations, risking integer overflows. An attacker can exploit this vulnerability by crafting a malicious filesystem, potentially leading to an out-of-bounds write during data reading. This exploitation could corrupt critical internal data and enable arbitrary code execution, thus bypassing secure boot protections.
References
CVSS V3.1
Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged
Timeline
Vulnerability published
Vulnerability Reserved