PT-2025-44149 · Linux+3 · Linux Kernel+3

Published 2025-09-17 · Updated 2026-05-07 · CVE-2025-40081

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

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

Description An issue was identified in the Linux kernel related to the perf subsystem and specifically the arm spe component. A cast to unsigned long was implemented for the nr pages variable to prevent potential overflow issues when handling large AUX buffer sizes greater than or equal to 2 GiB. The vulnerable function is PERF IDX2OFF().

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

Exploit

Heap Based Buffer Overflow

Out of bounds Read

Weakness Enumeration

CWE-122

CWE-125

Related Identifiers

AZL-68912

BDU:2025-16408

CVE-2025-40081

DLA-4379-1

DLA-4404-1

DSA-6053-1

ECHO-33D6-6D8B-B941

MGASA-2025-0309

MGASA-2025-0310

OESA-2025-2632

OESA-2025-2633

OESA-2025-2634

OESA-2025-2635

OESA-2025-2636

OPENSUSE-SU-2025:15702-1

OPENSUSE-SU-2025:20172-1

OPENSUSE-SU-2026:10301-1

SUSE-SU-2026:0278-1

SUSE-SU-2026:0281-1

SUSE-SU-2026:0293-1

SUSE-SU-2026:0315-1

SUSE-SU-2026:0316-1

SUSE-SU-2026:20012-1

SUSE-SU-2026:20015-1

SUSE-SU-2026:20021-1

SUSE-SU-2026:20477-1

SUSE-SU-2026:20498-1

SUSE-SU-2026:20845-1

SUSE-SU-2026:20876-1

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8033-1

USN-8033-2

USN-8033-3

USN-8033-4

USN-8033-5

USN-8033-6

USN-8033-7

USN-8033-8

USN-8034-1

USN-8034-2

USN-8048-1

USN-8095-1

USN-8095-2

USN-8095-3

USN-8095-4

USN-8095-5

USN-8100-1

USN-8125-1

USN-8126-1

USN-8141-1

USN-8163-1

USN-8163-2

USN-8165-1

USN-8243-1

USN-8261-1

Affected Products

Debian

Linuxmint

Linux Kernel

Ubuntu

References · 3705

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40081.json · Exploit
• https://ubuntu.com/security/CVE-2025-38055 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40092 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21833 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39788 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38251 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38543 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8030-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2025-0309.html · Security Note
• https://ubuntu.com/security/CVE-2026-23026 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40284 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68803 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40307 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37844 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-40081 · Vendor Advisory