PT-2025-14299 · Linux+7 · Linux Kernel+7

Published 2025-03-05 · Updated 2026-05-26 · CVE-2025-21918

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 NULL pointer access issue has been resolved in the Linux kernel. The problem occurred because resources were being released prematurely, before all threads that utilized them had been destroyed. This issue has been fixed by ensuring that resources are not deallocated until the associated workqueue has completed.

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

Exploit

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2025-12647

ALT-PU-2025-5786

ALT-PU-2025-7195

AZL-59937

BDU:2025-04087

CVE-2025-21918

DLA-4193-1

DSA-5900-1

ECHO-2FA2-E588-ABA7

OESA-2025-1572

OESA-2025-1573

OPENSUSE-SU-2025_01614-1

OPENSUSE-SU-2025_01707-1

SUSE-SU-2025:01614-1

SUSE-SU-2025:01707-1

SUSE-SU-2025:01919-1

SUSE-SU-2025:01951-1

SUSE-SU-2025:01964-1

SUSE-SU-2025:01967-1

SUSE-SU-2025:20192-1

SUSE-SU-2025:20206-1

SUSE-SU-2025:20270-1

SUSE-SU-2025:20283-1

SUSE-SU-2025_01614-1

SUSE-SU-2025_01707-1

SUSE-SU-2025_01951-1

SUSE-SU-2025_01964-1

SUSE-SU-2025_01967-1

USN-7605-1

USN-7605-2

USN-7606-1

USN-7628-1

USN-7764-1

USN-7764-2

USN-7765-1

USN-7766-1

USN-7767-1

USN-7767-2

USN-7779-1

USN-7790-1

USN-7800-1

USN-7801-1

USN-7801-2

USN-7801-3

USN-7802-1

USN-7809-1

Affected Products

Alt Linux

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 1802

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21918.json · Exploit
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-37936 · Security Note
• https://ubuntu.com/security/CVE-2025-21917 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22010 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-58096 · Security Note
• https://ubuntu.com/security/CVE-2025-38477 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21915 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21922 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2025-21918 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22044 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21956 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22065 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22027 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22021 · Vendor Advisory