CVE-2025-4437
5.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|
Weaknesses
- CWE-770: Allocation of Resources Without Limits or Throttling
Workarounds
As for now there's no available mitigation for this flaw.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://access.redhat.com/security/cve/CVE-2025-4437
- https://bugzilla.redhat.com/show_bug.cgi?id=2375084
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