PT-2025-36286 · Linux+5 · Linux Kernel+5

Published 2025-01-01 · Updated 2026-04-20 · CVE-2025-39692

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 within the SMB server implementation. A flaw exists because destroy workqueue(smb direct wq) was called before stop sessions(), leading to existing connections attempting to use smb direct wq as a NULL pointer.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

AZL-66956

BDU:2025-15730

CVE-2025-39692

DLA-4328-1

DSA-6008-1

DSA-6009-1

ECHO-B167-9577-FF14

MGASA-2025-0234

MGASA-2025-0235

OESA-2025-2765

OESA-2025-2766

OESA-2025-2767

USN-8028-1

USN-8028-2

USN-8028-3

USN-8028-4

USN-8028-5

USN-8028-6

USN-8028-7

USN-8028-8

USN-8031-1

USN-8031-2

USN-8031-3

USN-8052-1

USN-8052-2

USN-8074-1

USN-8074-2

USN-8126-1

Affected Products

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Ubuntu

References · 1333

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39692.json · Exploit
• https://ubuntu.com/security/CVE-2025-38145 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40238 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38714 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38722 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40233 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37970 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40169 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38065 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40105 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38474 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40264 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40070 · Vendor Advisory
• https://git.kernel.org/stable/c/bac7b996d42e458a94578f4227795a0d4deef6fa · Patch
• https://ubuntu.com/security/CVE-2025-40155 · Vendor Advisory