PT-2025-49057 · Linux+2 · Linux Kernel+2

Published 2025-10-11 · Updated 2026-03-25 · CVE-2025-40230

Positive Technologies (AI Summary)

CVSS v2.0

5.4

Medium

Base vector

AV:N/AC:H/Au:N/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 related to Transparent Huge Pages (THP). When memory error injection occurs on a THP mapped to userspace, the kernel can panic instead of terminating the affected process. This occurs because splitting the THP involves reading pages, which can trigger a second machine check exception within the kernel, leading to a kernel panic. The issue arises from attempting to map the poisoned THP to a zeropage during the splitting process, causing a re-access of pages in the hardware-poisoned THP within the kernel. The fix prevents accessing the poisoned page during zeropage identification, while continuing to scan unaffected pages.

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

Exploit

Weakness Enumeration

CWE-703

Related Identifiers

BDU:2026-02794

CVE-2025-40230

OPENSUSE-SU-2026:20416-1

SUSE-SU-2026:20838-1

SUSE-SU-2026:20931-1

SUSE-SU-2026:21284-1

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

Affected Products

Linuxmint

Linux Kernel

Ubuntu

References · 779

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40230.json · Exploit
• https://ubuntu.com/security/CVE-2025-68192 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40179 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68251 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40163 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40187 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40080 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40321 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40041 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8030-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40001 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-40230 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40060 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68187 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40096 · Vendor Advisory