A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://access.redhat.com/security/cve/CVE-2026-104046 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2478662 Exploit, Issue Tracking, Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.2 · fedoraproject, redhatNVD modified 2026-10-13 15:35
Affected (CPE criteria) 6
cpe:2.3:a:fedoraproject:sssd:2.12.0:*:*:*:*:*:*:*cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*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:*:*:*:*:*:*:*
References 2
- https://access.redhat.com/security/cve/CVE-2026-104046 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2478662 Exploit, Issue Tracking, Mitigation, Vendor Advisory