PT-2025-13219 · Linux+2 · Linux Kernel+2

Published 2025-02-26 · Updated 2025-06-16 · CVE-2025-21882

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 issue has been identified in the Linux kernel, specifically in the net/mlx5 component. The problem occurs when enabling vport QoS fails, resulting in the scheduling node not being freed. This causes a memory leak. The issue has been resolved by adding the missing free and resetting the vport scheduling node pointer to NULL.

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

Exploit

Improper Resource Release

Memory Leak

Weakness Enumeration

CWE-404

CWE-401

Related Identifiers

BDU:2025-03679

CVE-2025-21882

SUSE-SU-2025:01951-1

SUSE-SU-2025:01967-1

SUSE-SU-2025_01951-1

SUSE-SU-2025_01967-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 821

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21882.json · Exploit
• https://ubuntu.com/security/CVE-2025-21882 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01951-1 · Vendor Advisory
• https://git.kernel.org/stable/c/fead368502bce0e10bea7c0d2895b2fa0c6c10aa · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:01967-1 · Vendor Advisory
• https://git.kernel.org/stable/c/7f3528f7d2f98b70e19a6bb7b130fc82c079ac54 · Patch
• https://linux.oracle.com/errata/ELSA-2026-50232.html · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-50160.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-03679 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-21882 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-21882 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-21882 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-21882 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-21882 · Vendor Advisory
• https://suse.com/security/cve/CVE-2025-37809 · Note