PT-2025-49368 · Linux+2 · Linux Kernel+2

Published 2025-12-06 · Updated 2026-02-24 · CVE-2025-40267

Positive Technologies (AI Summary)

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

Description A flaw exists in the Linux kernel’s io uring/rw functionality. A previous commit intended to improve cleanup processes inadvertently introduced a memory leak. Specifically, if internal caches overflow during a request, the allocated iovec may not be properly freed when the request is aborted early, leading to a potential memory leak. The issue is related to the recycling infrastructure and the handling of allocated iovecs during early failure scenarios.

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

Exploit

Related Identifiers

CVE-2025-40267

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

Affected Products

Linuxmint

Linux Kernel

Ubuntu

References · 392

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40267.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