CVSS 3.1 Score 9.8 of 10 (high)


Published Dec 4, 2023
Updated: Dec 22, 2023


CVE-2023-21228 is a cyber vulnerability that affects the kernel in certain Linux operating systems. It is a result of an out-of-bounds write vulnerability in the PMRChangeSparseMemOSMem function of physmem_osmem_linux.c. This vulnerability could allow an attacker to escalate their privileges locally within the kernel without requiring any additional execution privileges or user interaction. The severity of this vulnerability is rated as critical, with a base score of 9.8, and it has a high impact on both integrity and confidentiality. Remediation measures should be taken promptly to mitigate the potential danger this vulnerability poses to organizations using affected Linux systems.

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