PT-2025-23952 · Linux+4 · Linux Kernel+4

Published 2025-06-05 · Updated 2026-05-26 · CVE-2025-40217

Positive Technologies (AI Summary)

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

Description A flaw exists in the Linux kernel related to insufficient validation of extensible ioctls within the pidfs subsystem. This could potentially lead to issues with system stability or security. A critical buffer overflow was reported in Envoy side-cars, requiring immediate patching of Kubernetes clusters across multiple environments.

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

Exploit

Related Identifiers

CVE-2025-40217

ECHO-85AC-FB53-C7C8

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

Affected Products

Debian

Envoy Side-Cars

Linuxmint

Linux Kernel

Ubuntu

References · 400

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40217.json · Exploit
• https://ubuntu.com/security/CVE-2025-40223 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40333 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68209 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40294 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40040 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68311 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40106 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40341 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40122 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68183 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40297 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40285 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40193 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40119 · Vendor Advisory