PT-2025-44118 · Linux+2 · Linux Kernel+2

Published 2025-10-02 · Updated 2026-03-07 · CVE-2025-40050

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

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

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

Description The Linux kernel contains a flaw within the BPF verifier in the check alu op() function. The verifier incorrectly performs scalar adjustments for BPF NEG operations when the destination register holds a pointer. This occurs because check reg arg() and adjust scalar min max vals() are called unconditionally for these operations, even when unnecessary and potentially incorrect for pointer destinations.

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

Exploit

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BDU:2025-13617

CVE-2025-40050

OPENSUSE-SU-2025:15702-1

OPENSUSE-SU-2026:10301-1

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

Affected Products

Linuxmint

Linux Kernel

Ubuntu

References · 593

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40050.json · Exploit
• https://ubuntu.com/security/CVE-2025-40153 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40066 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40217 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40331 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40166 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40063 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40035 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40049 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40085 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40315 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40185 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40223 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68246 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40333 · Vendor Advisory