A flaw was found in SSSD. An unprivileged local user can repeatedly request lookups for nonexistent entries through the Name Service Switch (NSS) responder. Because the negative cache does not limit the total number of stored entries and only removes expired records when an existing key is rechecked, the cache can grow without bound. This behavior can lead to memory exhaustion, resulting in a Denial of Service (DoS) as the responder becomes unresponsive or terminates.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 06 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 06 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 06 Oct 2026 04:15:00 +0000

Type Values Removed Values Added
First Time appeared Sssd
Sssd sssd
Vendors & Products Sssd
Sssd sssd

Tue, 06 Oct 2026 01:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in SSSD. An unprivileged local user can repeatedly request lookups for nonexistent entries through the Name Service Switch (NSS) responder. Because the negative cache does not limit the total number of stored entries and only removes expired records when an existing key is rechecked, the cache can grow without bound. This behavior can lead to memory exhaustion, resulting in a Denial of Service (DoS) as the responder becomes unresponsive or terminates.
Title Sssd: sssd: denial of service via unbounded negative cache growth
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: 2026-10-06T13:21:25.730Z

Reserved: 2026-10-01T17:24:07.171Z

Link: CVE-2026-104041

cve-icon Vulnrichment

Updated: 2026-10-06T13:19:30.987Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-06T02:17:03.327

Modified: 2026-10-06T15:09:20.387

Link: CVE-2026-104041

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-06T00:42:11Z

Links: CVE-2026-104041 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T04:00:12Z

Weaknesses