This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-112321 →
Unrated
The AUTH_GSSAPI handler in lib/rpc/svc_auth_gssapi.c in MIT Kerberos 5 (aka krb5) does not free decoded arguments on certain error paths, which allows...
UBUNTU-CVE-2026-112321
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 AUTH_GSSAPI handler in lib/rpc/svc_auth_gssapi.c in MIT Kerberos 5 (aka krb5) does not free decoded arguments on certain error paths, which allows remote attackers to cause a denial of service (memory exhaustion in kadmind) via crafted AUTH_GSSAPI_INIT requests that trigger authentication failures.
Source: OSV.dev (Open Source Vulnerabilities) OSV