CVE-2025-40217

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.