PT-2025-14347 · Linux+8 · Linux Kernel+8

Published 2025-03-08 · Updated 2026-04-20 · CVE-2025-21966

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to memory corruption in the Linux kernel, specifically in the dm-flakey feature with the corrupt bio byte option. It occurs due to an incorrect parameter being passed to the bio init function.

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

Exploit

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALSA-2025:7903

ALT-PU-2025-12647

ALT-PU-2025-5786

AZL-60281

BDU:2025-12303

CVE-2025-21966

INFSA-2025_7903

MGASA-2025-0142

MGASA-2025-0146

OESA-2025-1625

OESA-2025-1629

OPENSUSE-SU-2025_01614-1

OPENSUSE-SU-2025_01707-1

RHSA-2025:7903

RHSA-2025:7956

RHSA-2025_7903

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

Alt Linux

Almalinux

Astra Linux

Linuxmint

Linux Kernel

Red Hat

Red Os

Suse

Ubuntu

References · 1819

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21966.json · Exploit
• https://ubuntu.com/security/CVE-2025-22037 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22019 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21935 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39728 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7605-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37932 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21977 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21891 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22014 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22075 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21880 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21928 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-21966 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22089 · Vendor Advisory