PT-2025-20541 · Linux+4 · Linux Kernel+4

Published 2025-02-28 · Updated 2026-05-22 · CVE-2025-37889

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, related to the handling of the NOMASK flag for all PCI/MSI backends. The issue arose from the conversion of a XEN specific global variable, which missed key facts about legacy architectures and parent MSI domains, resulting in an unconditional NULL pointer dereference. The existing pci msi domain supports() helper is used to correctly handle all possible cases.

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

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2025-11930

CVE-2025-37889

DLA-4193-1

ECHO-B77C-AD9B-B22D

OESA-2026-2417

OESA-2026-2418

SUSE-SU-2025:01964-1

SUSE-SU-2025:01965-1

SUSE-SU-2025:02000-1

SUSE-SU-2025:02254-1

SUSE-SU-2025:02307-1

SUSE-SU-2025:02333-1

SUSE-SU-2025:02923-1

SUSE-SU-2025:20408-1

SUSE-SU-2025:20413-1

SUSE-SU-2025:20419-1

SUSE-SU-2025:20421-1

SUSE-SU-2025_01964-1

SUSE-SU-2025_01965-1

SUSE-SU-2025_02000-1

SUSE-SU-2025_02254-1

SUSE-SU-2025_02307-1

SUSE-SU-2025_02333-1

USN-7591-1

USN-7591-2

USN-7591-3

USN-7591-4

USN-7591-5

USN-7591-6

USN-7592-1

USN-7593-1

USN-7597-1

USN-7597-2

USN-7598-1

USN-7602-1

USN-7605-1

USN-7605-2

USN-7606-1

USN-7628-1

USN-7655-1

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

Linuxmint

Linux Kernel

Suse

Ubuntu

References · 2294

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37889.json · Exploit
• https://ubuntu.com/security/notices/USN-7598-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-39955 · Security Note
• https://ubuntu.com/security/CVE-2025-22004 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21957 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-57973 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21976 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7801-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37841 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21905 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-58072 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-37889 · Security Note
• https://ubuntu.com/security/CVE-2025-39735 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31447 · Security Note
• https://ubuntu.com/security/CVE-2024-53203 · Vendor Advisory