Description
A flaw was found in SSSD. In configurations where the autofs responder service is enabled, memory allocated during successful request processing is not released until the client connection terminates. A local attacker can exploit this vulnerability by maintaining an open connection and repeatedly submitting valid requests, leading to memory exhaustion and a Denial of Service (DoS).
Published: 2026-10-06
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Disable the SSSD autofs responder if automount maps are not served through SSSD in your environment. To stop and disable the socket-activated autofs responder, run: # systemctl stop sssd-autofs.socket sssd-autofs.service # systemctl mask sssd-autofs.socket If the autofs responder is explicitly configured in /etc/sssd/sssd.conf, remove autofs from the services line and restart SSSD. If the responder must remain enabled, restrict access to the autofs responder socket to trusted local clients only. Closing long-lived client connections or restarting the responder reclaims the retained memory, but this is operational containment rather than a complete fix. Note that disabling the autofs responder prevents the resolution and mounting of automount maps managed via SSSD, and stopping or restarting SSSD services will briefly interrupt active identity lookups and automount operations.

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Advisories

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History

Tue, 06 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Red Hat
Red Hat enterprise Linux
Redhat openshift Container Platform
Sssd
Sssd sssd
Vendors & Products Red Hat
Red Hat enterprise Linux
Redhat openshift Container Platform
Sssd
Sssd sssd

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

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', '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 00:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in SSSD. In configurations where the autofs responder service is enabled, memory allocated during successful request processing is not released until the client connection terminates. A local attacker can exploit this vulnerability by maintaining an open connection and repeatedly submitting valid requests, leading to memory exhaustion and a Denial of Service (DoS).
Title Sssd: sssd: denial of service via memory exhaustion in autofs responder
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-772
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'}


Subscriptions

Red Hat Enterprise Linux
Redhat Enterprise Linux Openshift Openshift Container Platform
Sssd Sssd
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-16T10:57:25.185Z

Reserved: 2026-10-01T17:20:25.333Z

Link: CVE-2026-104031

cve-icon Vulnrichment

Updated: 2026-10-06T13:01:42.538Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-06T01:16:33.843

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

Link: CVE-2026-104031

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-05T21:45:46Z

Links: CVE-2026-104031 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T20:45:05Z

Weaknesses
  • CWE-772

    Missing Release of Resource after Effective Lifetime