PT-2023-18005 · Linux · Linux Kernel

Published 2023-12-04 · Updated 2023-12-22 · CVE-2023-21216

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a possible arbitrary code execution due to a use after free in the PMRChangeSparseMemOSMem function of physmem osmem linux.c. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Incorrect Default Permissions

Weakness Enumeration

CWE-276

Related Identifiers

CVE-2023-21216

Affected Products

Linux Kernel

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2023-21216 · Security Note
• https://source.android.com/security/bulletin/2023-12-01 · Vendor Advisory
• https://t.me/cvenotify/64811 · Telegram Post
• https://t.me/cvenotify/62206 · Telegram Post