PT-2025-4355 · Linux+5 · Linux Kernel+5

Published 2025-01-15 · Updated 2025-10-03 · CVE-2025-21674

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 issue is related to incorrect locking of resources in the Linux kernel, specifically in the mlx5 driver. This can lead to a denial of service. The problem occurs when enabling IPsec packet offload in tunnel mode, resulting in a kernel panic due to two issues: incorrect marking of SA mode and unnecessary flush workqueue in the SA delete routine. A possible interrupt unsafe locking scenario can cause a deadlock.

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

Exploit

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

ALT-PU-2025-12647

ALT-PU-2025-3467

ALT-PU-2025-3500

AZL-56399

BDU:2025-01480

CVE-2025-21674

OESA-2025-1371

OESA-2025-1372

OPENSUSE-SU-2025_0428-1

OPENSUSE-SU-2025_0499-1

OPENSUSE-SU-2025_0557-1

SUSE-SU-2025:0428-1

SUSE-SU-2025:0499-1

SUSE-SU-2025:0557-1

SUSE-SU-2025:0564-1

SUSE-SU-2025:20165-1

SUSE-SU-2025:20166-1

SUSE-SU-2025:20248-1

SUSE-SU-2025:20249-1

SUSE-SU-2025_0428-1

SUSE-SU-2025_0499-1

SUSE-SU-2025_0557-1

USN-7445-1

USN-7448-1

USN-7595-1

USN-7595-2

USN-7595-3

USN-7595-4

USN-7595-5

USN-7596-1

USN-7596-2

USN-7653-1

Affected Products

Alt Linux

Astra Linux

Linuxmint

Linux Kernel

Suse

Ubuntu

References · 1674

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21674.json · Exploit
• https://ubuntu.com/security/CVE-2025-21718 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21674 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7596-2 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-01480 · Security Note
• https://ubuntu.com/security/CVE-2025-21799 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-58053 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21785 · Security Note
• https://ubuntu.com/security/CVE-2024-58080 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21722 · Security Note
• https://ubuntu.com/security/notices/USN-7595-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-57973 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21711 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-57994 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21667 · Vendor Advisory