CVE-2025-4437 – CRI-O Denial-of-Service Vulnerability

CVE ID : CVE-2025-4437

Published : Aug. 20, 2025, 1:15 p.m. | 1 hour ago

Description : There’s a vulnerability in the CRI-O application where when container is launched with securityContext.runAsUser specifying a non-existent user, CRI-O attempts to create the user, reading the container’s entire /etc/passwd file into memory. If this file is excessively large, it can cause the a high memory consumption leading applications to be killed due to out-of-memory. As a result a denial-of-service can be achieved, possibly disrupting other pods and services running in the same host.

Severity: 5.7 | MEDIUM

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