Krb5: mit krb5 kadmind authenticated dos exploiting dereference of null policy name pointers
Historical advisory recorded 12 Nov 2026 14:16:18 UTC. Read the latest advisory.
cve-program · CVE-2026-112318
PublishedThe policy RPC stubs in kadmin/server/server_stubs.c in MIT Kerberos 5 (aka krb5) 1.5.3 and later do not reject a NULL policy name decoded by xdr_nullstring(), which allows remote authenticated users to cause a denial of service (kadmind crash via NULL pointer dereference) by sending a policy request with an empty policy name that reaches authorization checks or logging code.
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cve-program · CVE-2026-112318
PublishedKrb5: mit krb5 kadmind authenticated dos exploiting dereference of null policy name pointers
The policy RPC stubs in kadmin/server/server_stubs.c in MIT Kerberos 5 (aka krb5) 1.5.3 and later do not reject a NULL policy name decoded by xdr_nullstring(), which allows remote authenticated users to cause a denial of service (kadmind crash via NULL pointer dereference) by sending a policy request with an empty policy name that reaches authorization checks or logging code.
- Source published
- 9 Nov 2026 19:08:02 UTC
- Source modified
- 12 Nov 2026 12:56:57 UTC
- Saved here
- 12 Nov 2026 14:16:18 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 · 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H