This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-112320 →
Unrated
The GSS-RPC transport layer in MIT Kerberos 5 (aka krb5) 1.4 and later does not release the previous authentication context when a client switches fro...
UBUNTU-CVE-2026-112320
First seen on SecPulse
Affected packages
| Package | Affected → Fixed | |
|---|---|---|
| Ubuntu:Pro:14.04:LTSkrb5 |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:16.04:LTSkrb5 |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:18.04:LTSkrb5 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSkrb5 |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSkrb5 |
All versions→ Not listed |
Not listed |
| Ubuntu:24.04:LTSkrb5 |
All versions→ Not listed |
Not listed |
| Ubuntu:26.10krb5 |
All versions→ Not listed |
Not listed |
| Ubuntu:26.04:LTSkrb5 |
All versions→ Not listed |
Not listed |
This record does not list fixed versions. Check the article or the vendor advisory in the references for whether and where it is fixed.
Original description The description as published by the source.
The GSS-RPC transport layer in MIT Kerberos 5 (aka krb5) 1.4 and later does not release the previous authentication context when a client switches from an RPCSEC_GSS or AUTH_GSSAPI flavor to a non-GSS flavor on the same TCP connection. This allows remote attackers to cause a denial of service (memory exhaustion in kadmind) by repeatedly establishing and abandoning GSS authentication contexts.
Source: OSV.dev (Open Source Vulnerabilities) OSV
References
- report ubuntu.com
- report cve.org
- report access.redhat.com/downloads/content/package-browser