VULNERABILITY INTELLIGENCE
CVE-2025-4437
CVSS score5.7 MEDIUM
EPSS probability0.25%
CISA KEVNot currently listed
Published2025-08-20
Last modified2026-09-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
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.
Weakness classification
- secalert@redhat.com: CWE-770