---
id: "CVE-2026-112318"
page: "https://infrastack.ai/live/CVE-2026-112318"
kind: "vulnerability"
aliases: ["CVE-2026-112318"]
title: "MIT Kerberos kadmind crashes when a policy request has an empty name"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "kadmind", "kerberos", "mit-kerberos", "self-hosted"]
not_affected_if: ["auth-required"]
published_at: "2026-11-09T19:16:40+00:00"
first_seen_at: "2026-11-09T19:28:13+00:00"
updated_at: "2026-11-09T19:31:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112318", "first_seen_at": "2026-11-09T19:28:13+00:00"}]
exploit_sources: []
---

# MIT Kerberos kadmind crashes when a policy request has an empty name

Link for people: https://infrastack.ai/live/CVE-2026-112318 (this .md is for agents)

The kadmin policy RPC stubs in MIT Kerberos 5 1.5.3 and later do not reject a NULL policy name, so a crafted request dereferences a null pointer. An authenticated remote user can crash the kadmind administration daemon, causing denial of service.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-09T19:28:13+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112318

## From the sources

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.

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