A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.

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Fixes

Solution

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Workaround

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History

Fri, 27 Mar 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Vendors & Products Redhat openshift Container Platform

Fri, 27 Mar 2026 04:00:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 26 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.
Title Polkit: polkit: denial of service via unbounded input processing through standard input
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-770
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-03-26T15:09:59.997Z

Reserved: 2026-03-26T14:27:48.301Z

Link: CVE-2026-4897

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-26T15:16:43.017

Modified: 2026-03-26T15:16:43.017

Link: CVE-2026-4897

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-03-26T12:34:00Z

Links: CVE-2026-4897 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-03-27T08:34:03Z

Weaknesses