PT-2025-37975 · Linux+4 · Linux Kernel+4

Published 2025-08-26 · Updated 2026-03-13 · CVE-2025-39830

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 The Linux kernel contains an issue in the net/mlx5 module where a memory leak occurs in the hws pool buddy init() function’s error path. The leak happens because the buddy allocator structure is not freed during error handling, resulting in unreleased memory.

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

Exploit

Missing Release of Resource after Effective Lifetime

Memory Leak

Weakness Enumeration

CWE-772

CWE-401

Related Identifiers

BDU:2026-06066

CVE-2025-39830

OPENSUSE-SU-2025:20081-1

SUSE-SU-2025:03601-1

SUSE-SU-2025:03633-1

SUSE-SU-2025:21074-1

SUSE-SU-2025:21139-1

SUSE-SU-2025:21179-1

SUSE-SU-2025:3725-1

Affected Products

Astra Linux

Debian

Linux Kernel

Suse

Mlx5

References · 1375

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39830.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2025-39830 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:20081-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:21139-1 · Vendor Advisory
• https://git.kernel.org/stable/c/2c0a959bebdc1ada13cf9a8242f177c5400299e6 · Patch
• https://osv.dev/vulnerability/CVE-2025-39830 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39830 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-39830 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:03601-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03633-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3725-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06066 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-39830 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:21074-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-39830 · Security Note