PT-2025-23155 · Linux+3 · Linux Kernel+3

Published 2025-05-05 · Updated 2025-08-28 · CVE-2025-37996

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 A vulnerability in the Linux kernel has been resolved, specifically in the KVM (Kernel-based Virtual Machine) for arm64 architecture. The issue was caused by an uninitialized memcache pointer in the user mem abort() function, which could lead to failure on paths requiring stage-2 allocation without transition via a permission fault or dirty logging. This was introduced by a commit that made the initialization of the local memcache variable conditional.

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

Exploit

Use of Uninitialized Resource

Improper Initialization

Weakness Enumeration

CWE-908

CWE-665

Related Identifiers

BDU:2026-04893

CVE-2025-37996

USN-7699-1

USN-7699-2

USN-7721-1

Affected Products

Astra Linux

Linuxmint

Linux Kernel

Ubuntu

References · 125

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37996.json · Exploit
• https://ubuntu.com/security/CVE-2025-37968 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37955 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37954 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37911 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7721-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-37996 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37917 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37898 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38083 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37956 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37930 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38019 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37963 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37921 · Vendor Advisory