Krb5: mit krb5 kadmind unauthenticated cpu dos via auth_gssapi client states cleanup
Historical advisory recorded 9 Nov 2026 20:02:10 UTC. Read the latest advisory.
cve-program · CVE-2026-112322
Publishedclean_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.
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cve-program · CVE-2026-112322
PublishedKrb5: mit krb5 kadmind unauthenticated cpu dos via auth_gssapi client states cleanup
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.
- Source published
- 9 Nov 2026 18:43:23 UTC
- Source modified
- 9 Nov 2026 18:43:23 UTC
- Saved here
- 9 Nov 2026 20:02:10 UTC
- Source terms
- CVE Program Terms of Use
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Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H