PT-2025-46748 · Linux+2 · Linux Kernel+2

Published 2025-05-27 · Updated 2026-02-24 · CVE-2025-40191

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:L/AC:L/Au:S/C:N/I:N/A:C

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

Description A flaw exists in the Linux kernel’s drm/amdkfd subsystem related to a kernel process reference leak when unmapping user pointers. Specifically, the kfd lookup process by pid function can leak a process reference and miss a null pointer check if the application process is already destroyed. This occurs when kfd lookup process by pid is called as a function parameter.

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

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

BDU:2025-14578

CVE-2025-40191

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

Affected Products

Linuxmint

Linux Kernel

Ubuntu

References · 395

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40191.json · Exploit
• https://ubuntu.com/security/CVE-2025-68251 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68167 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40161 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68180 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40043 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68190 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40140 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40363 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-14578 · Security Note
• https://ubuntu.com/security/CVE-2025-40224 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40059 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40286 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40082 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68315 · Vendor Advisory