CVE-2026-112323

krb5: MIT krb5 kadmind unauthenticated memory exhaustion via failed AUTH_GSSAPI_INIT requests

krb5

The AUTH_GSSAPI handler in lib/rpc/svc_auth_gssapi.c in MIT Kerberos 5 (aka krb5) 1.5.2 and later allows remote attackers to cause a denial of service (memory exhaustion in kadmind) by sending repeated failed AUTH_GSSAPI_INIT requests. Each failed request allocates client state that is only freed after a 15-minute expiration timeout, allowing an attacker to accumulate memory faster than it is reclaimed.

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-2026-112323
• Red Hat
  https://bugzilla.redhat.com/show_bug.cgi?id=2478440
• NVD
  CVE-2026-112323