PT-2025-46760 · Linux+2 · Linux Kernel+2

Published 2025-09-19 · Updated 2026-04-20 · CVE-2025-40203

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:L/AC:H/Au:S/C:P/I:P/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains an issue within the listmount() function. The problem arises from calling path put() while under the namespace semaphore, which can lead to issues if it's the last reference. The fix involves modifying listmount() to prevent calling path put() under the namespace semaphore.

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

Exploit

Weakness Enumeration

CWE-664

Related Identifiers

BDU:2025-14660

CVE-2025-40203

OPENSUSE-SU-2025:20172-1

SUSE-SU-2026:20012-1

SUSE-SU-2026:20015-1

SUSE-SU-2026:20021-1

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

Affected Products

Linuxmint

Linux Kernel

Ubuntu

References · 627

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40203.json · Exploit
• https://ubuntu.com/security/CVE-2025-40129 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40139 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40238 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68205 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40233 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40169 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40105 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40070 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40270 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40155 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68183 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68184 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40181 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40032 · Vendor Advisory