PT-2025-6063 · Linux+7 · Linux Kernel+7

Published 2025-01-07 · Updated 2026-03-14 · CVE-2025-21690

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 concerns a vulnerability in the Linux kernel where a persistent error in the hypervisor can cause the SCSI warning for failed I/O to flood the kernel log, maximizing CPU utilization and preventing troubleshooting from the VM side. This can lead to a denial of service (DoS) of the virtual machine. The warning logs have been rate-limited to prevent this issue.

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

Exploit

DoS

Resource Exhaustion

Improper Resource Release

Allocation of Resources Without Limits

Weakness Enumeration

CWE-400

CWE-404

CWE-770

Related Identifiers

ALT-PU-2025-12647

ALT-PU-2025-3469

ALT-PU-2025-3514

AZL-56949

AZL-57016

BDU:2025-01845

CVE-2025-21690

DLA-4076-1

MGASA-2025-0078

MGASA-2025-0079

OESA-2025-1446

OESA-2025-1450

OPENSUSE-SU-2025_0833-1

OPENSUSE-SU-2025_0835-1

OPENSUSE-SU-2025_0847-1

OPENSUSE-SU-2025_0853-1

OPENSUSE-SU-2025_0855-1

OPENSUSE-SU-2025_0856-1

OPENSUSE-SU-2025_0955-1

SUSE-SU-2025:0784-1

SUSE-SU-2025:0833-1

SUSE-SU-2025:0833-2

SUSE-SU-2025:0834-1

SUSE-SU-2025:0835-1

SUSE-SU-2025:0847-1

SUSE-SU-2025:0853-1

SUSE-SU-2025:0855-1

SUSE-SU-2025:0856-1

SUSE-SU-2025:0867-1

SUSE-SU-2025:0945-1

SUSE-SU-2025:0955-1

SUSE-SU-2025:20190-1

SUSE-SU-2025:20192-1

SUSE-SU-2025:20260-1

SUSE-SU-2025:20270-1

SUSE-SU-2025_0833-1

SUSE-SU-2025_0833-2

SUSE-SU-2025_0834-1

SUSE-SU-2025_0835-1

SUSE-SU-2025_0847-1

SUSE-SU-2025_0855-1

SUSE-SU-2025_0856-1

SUSE-SU-2025_0955-1

USN-7387-1

USN-7387-2

USN-7387-3

USN-7388-1

USN-7389-1

USN-7390-1

USN-7407-1

USN-7421-1

USN-7445-1

USN-7448-1

USN-7458-1

USN-7459-1

USN-7459-2

USN-7595-1

USN-7595-2

USN-7595-3

USN-7595-4

USN-7595-5

USN-7596-1

USN-7596-2

USN-7653-1

Affected Products

Alt Linux

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 1800

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21690.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-21764 · Security Note
• https://ubuntu.com/security/CVE-2024-50185 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-56594 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-56602 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-50249 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7653-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-50151 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-50205 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-57791 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21676 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-2312 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-50086 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-56622 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-56576 · Vendor Advisory