CVE-2023-21216

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

In PMRChangeSparseMemOSMem of physmem_osmem_linux.c, there is a possible arbitrary code execution due to a use after free. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Dec 4, 2023
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2023-21216: Critical severity, CVSS 9.8 | Vulnix