PT-2025-49789 · Linux+3 · Linux Kernel+3

CVE-2025-40336 · Published 2025-01-01 · Updated 2026-07-18

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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

Description A flaw exists in the Linux kernel’s drm/gpusvm subsystem related to the hmm pfn to map order() function. The issue arises when the huge memory map (hmm) range partially overlaps a huge page, potentially leading to memory mapping outside the intended range. The fix aligns the code with the xe userptr code, which will directly use gpusvm in a future patch.

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

Exploit

Related Identifiers

CVE-2025-40336

ECHO-427B-9943-99E2

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

Affected Products

Debian

Linuxmint

Linux Kernel

Ubuntu

References · 398

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40336.json · Exploit
• https://ubuntu.com/security/CVE-2025-40339 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40183 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40098 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68167 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40155 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40134 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68204 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40143 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68310 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40180 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40224 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40160 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40106 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68175 · Vendor Advisory