CVE-2026-112322

krb5: MIT krb5 kadmind unauthenticated CPU DoS via AUTH_GSSAPI client states cleanup

krb5

clean_client() in lib/rpc/svc_auth_gssapi.c in MIT Kerberos 5 (aka krb5) restarts its scan from the head of the client list after each removal, resulting in quadratic CPU cost. Remote attackers can cause a denial of service (CPU consumption in kadmind) by accumulating a large number of AUTH_GSSAPI client entries.

9. Nov 2026

Ausgewertete Quellen

• Red Hat
  https://access.redhat.com/errata/RHSA-2026:99624
• Red Hat
  https://access.redhat.com/errata/RHSA-2026:99625
• Red Hat
  https://access.redhat.com/security/cve/CVE-2026-112322
• Red Hat
  https://bugzilla.redhat.com/show_bug.cgi?id=2478445
• NVD
  CVE-2026-112322