A flaw was found in sssd. This vulnerability allows a local user to cause a Denial of Service (DoS) by submitting a specially crafted passkey authentication token that lacks null terminators. The authentication service reads past the end of the provided memory buffer, causing the process to crash and disrupting authentication services.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://access.redhat.com/security/cve/CVE-2026-104030 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2479429 Exploit, Issue Tracking, 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 5.5 · fedoraproject, redhatNVD modified 2026-10-28 14:28
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-2026-104030 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2479429 Exploit, Issue Tracking, Vendor Advisory