PT-2022-6416 · Linux+2 · Linux Kernel+2

Published 2022-11-30 · Updated 2026-03-13 · CVE-2023-23005

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.2

Description The issue is related to the misinterpretation of the alloc memory type return value in the mm/memory-tiers.c file of the Linux kernel. This misinterpretation can lead to errors, potentially causing a denial of service. It is noted that there are no realistic cases in which a user can cause the alloc memory type error case to be reached, which has led to disputes about the vulnerability.

Recommendations To resolve the issue, update the Linux kernel to version 6.2 or later. At the moment, there is no information about additional mitigation measures for versions prior to 6.2.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

CWE-253

Related Identifiers

ALT-PU-2023-1434

ALT-PU-2023-1539

ALT-PU-2024-14046

ALT-PU-2024-6818

AZL-25609

BDU:2023-01215

CVE-2023-23005

ECHO-677D-6D1A-6CFB

Affected Products

Alt Linux

Debian

Linux Kernel

References · 19

• https://github.com/torvalds/linux/commit/4a625ceee8a0ab0273534cb6b432ce6b331db5ee · Patch
• https://osv.dev/vulnerability/AZL-25609 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-23005 · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2 · Patch
• https://security-tracker.debian.org/tracker/CVE-2023-23005 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-23005 · Vendor Advisory
• https://bugzilla.suse.com/show_bug.cgi?id=1208844#c2 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-23005 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2023-23005 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-23005 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-23005 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-23005 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-01215 · Security Note
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2024-0905SE18MD · Vendor Advisory
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.116 · Note