CVE-2026-4897

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:freedesktop:polkit:-:::::::*
	cpe:2.3:a:redhat:openshift_container_platform:4.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

History

No history.

Information

Published : 2026-03-26 15:16

Updated : 2026-09-10 18:18

NVD link : CVE-2026-4897

Mitre link : CVE-2026-4897

CVE.ORG link : CVE-2026-4897

JSON object : View

Products Affected

redhat

enterprise_linux
openshift_container_platform

freedesktop

polkit

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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Esta entrada sin l\u00edmites puede llevar a una condici\u00f3n de falta de memoria (OOM), lo que resulta en una denegaci\u00f3n de servicio (DoS) para el sistema."}], "lastModified": "2026-09-10T18:18:01.857", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:freedesktop:polkit:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "56337B20-72E2-40A4-81E7-06B5CC48F039"}, {"criteria": "cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "932D137F-528B-4526-9A89-CD59FA1AB0FE"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}