CVE-2025-4437

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.

CVSS v3 5.7 MEDIUM

5.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.1 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2025-4437
https://bugzilla.redhat.com/show_bug.cgi?id=2375084

Configurations

No configuration.

History

26 Sep 2026, 00:10

Type	Values Removed	Values Added
Summary		(es) Hay una vulnerabilidad en la aplicación CRI-O donde cuando un contenedor es lanzado con securityContext.runAsUser especificando un usuario inexistente, CRI-O intenta crear el usuario, leyendo el archivo /etc/p4ssd completo del contenedor en memoria. Si este archivo es excesivamente grande, puede causar un alto consumo de memoria, lo que lleva a que las aplicaciones sean terminadas debido a falta de memoria. Como resultado, se puede lograr una denegación de servicio, posiblemente interrumpiendo otros pods y servicios que se ejecutan en el mismo host.

Information

Published : 2025-08-20 13:15

Updated : 2026-09-26 00:10

NVD link : CVE-2025-4437

Mitre link : CVE-2025-4437

CVE.ORG link : CVE-2025-4437

JSON object : View

Products Affected

No product.

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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