PT-2025-51660 · Linux+2 · Linux Kernel+2

Published 2025-12-16 · Updated 2026-02-24 · CVE-2025-68247

Positive Technologies (AI Summary)

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

Description A potential memory leak exists in the do timer create() function related to POSIX timers. Specifically, when a timer ID is allocated and subsequent access to a user space value fails, the allocated POSIX timer structure is not freed, leading to a memory leak. The issue is addressed by moving the allocation of the timer structure after the user space access check.

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

Exploit

Related Identifiers

CVE-2025-68247

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

Affected Products

Linuxmint

Linux Kernel

Ubuntu

References · 391

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68247.json · Exploit
• https://ubuntu.com/security/CVE-2025-40153 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-68247 · 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://security-tracker.debian.org/tracker/CVE-2025-68247 · 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