CVE-2026-4897 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Vendors	Products
Redhat	Enterprise Linux Openshift

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References

Link	Providers
https://access.redhat.com/security/cve/CVE-2026-4897
https://bugzilla.redhat.com/show_bug.cgi?id=2451739

History

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		https://access.redhat.com/security/cve/CVE-2026-4897 https://bugzilla.redhat.com/show_bug.cgi?id=2451739
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'}`

MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-03-26T14:56:05.943Z

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

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

Link: CVE-2026-4897

Vulnrichment

No data.

NVD

Status : Received

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

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

Link: CVE-2026-4897

Redhat

No data.

OpenCVE Enrichment

No data.

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