PT-2025-14294 · Linux+6 · Linux Kernel+6

Published 2025-03-07 · Updated 2026-04-20 · CVE-2025-21913

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 The issue is related to the Linux kernel, where a vulnerability has been resolved by using rdmsr safe() in amd get mmconfig range(). This change is necessary because Xen does not offer MSR FAM10H MMIO CONF BASE to all guests, resulting in an unchecked MSR access error. The error occurs when trying to access the MSR FAM10H MMIO CONF BASE register, which is not available to all guests. The vulnerability is exposed when the Xen MSR accessors are fixed to not be silently safe.

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

Exploit

Improper Access Control

Weakness Enumeration

CWE-284

CWE-264

Related Identifiers

BDU:2025-03888

CVE-2025-21913

DLA-4193-1

DSA-5900-1

ECHO-0FEF-5558-55FB

OESA-2025-2551

OESA-2025-2556

OPENSUSE-SU-2025_01614-1

OPENSUSE-SU-2025_01707-1

SUSE-SU-2025:01614-1

SUSE-SU-2025:01707-1

SUSE-SU-2025:01919-1

SUSE-SU-2025:01951-1

SUSE-SU-2025:01964-1

SUSE-SU-2025:01967-1

SUSE-SU-2025:20192-1

SUSE-SU-2025:20206-1

SUSE-SU-2025:20270-1

SUSE-SU-2025:20283-1

SUSE-SU-2025_01614-1

SUSE-SU-2025_01707-1

SUSE-SU-2025_01951-1

SUSE-SU-2025_01964-1

SUSE-SU-2025_01967-1

USN-7605-1

USN-7605-2

USN-7606-1

USN-7628-1

USN-7764-1

USN-7764-2

USN-7765-1

USN-7766-1

USN-7767-1

USN-7767-2

USN-7779-1

USN-7790-1

USN-7800-1

USN-7801-1

USN-7801-2

USN-7801-3

USN-7802-1

USN-7809-1

Affected Products

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 1792

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21913.json · Exploit
• https://osv.dev/vulnerability/USN-7764-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37798 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21978 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7800-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7764-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21977 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21989 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-58090 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37997 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2025-0811SE18 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22060 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21910 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23136 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7809-1 · Vendor Advisory