CVE-2026-4897

MediumCVSS 5.5/10Last modified Nov 10, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-770

Affected software

Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 10	—
Red Hat	Red Hat Enterprise Linux 9	—
Red Hat	Red Hat Enterprise Linux 9	—
Red Hat	Red Hat Hardened Images	—
Red Hat	Red Hat Enterprise Linux 6	—
Red Hat	Red Hat Enterprise Linux 7	—
Red Hat	Red Hat Enterprise Linux 8	—
Red Hat	Red Hat OpenShift Container Platform 4	—
Red Hat	Red Hat OpenShift Container Platform 4	—

References

https://access.redhat.com/errata/RHSA-2026:59997
https://access.redhat.com/errata/RHSA-2026:66287
https://access.redhat.com/errata/RHSA-2026:97463
https://access.redhat.com/security/cve/CVE-2026-4897Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2451739Issue Tracking, Vendor Advisory

Timeline

Published: Mar 26, 2026
Last modified: Nov 10, 2026
NVD status: Modified

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