PT-2025-38339 · Linux+3 · Linux Kernel+3

Published 2022-12-21 · Updated 2025-10-23 · CVE-2022-50391

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 (affected versions not specified)

Description A memory leak exists in the set mempolicy home node system call within the kernel's memory management subsystem (mm/mempolicy). When processing virtual memory areas (VMAs) with memory policies other than MPOL BIND or MPOL PREFERRED MANY, an error is returned without releasing allocated memory via mpol put. This allows arbitrary users to leak kernel memory.

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

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

BDU:2026-02045

CVE-2022-50391

RHSA-2023:6583

RHSA-2023_6583

SUSE-SU-2025:03615-1

SUSE-SU-2025:03628-1

SUSE-SU-2025:3716-1

SUSE-SU-2025:3761-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Suse

References · 862

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50391.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50391 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-02045 · Security Note
• https://osv.dev/vulnerability/CVE-2022-50391 · Vendor Advisory
• https://git.kernel.org/stable/c/0ce4cc6d269ddc448a825955b495f662f5d9e153 · Patch
• https://git.kernel.org/stable/c/4ca0eb6b2f3add8c5daefb726ce57dc95d103d33 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-50391 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50391 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50391 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:3761-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50391 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50391 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:3716-1 · Vendor Advisory