Ubuntu USN-8585-1: Kerberos Integer Underflow & NegoEx Parsing Vulnerabilities (CVE-2026-11850, CVE-2026-40355, CVE-2026-40356)
Security AdvisoryUSN-8585-1HighUbuntu
Affected:
- krb5-admin-server (Ubuntu 26.04 LTS)
- krb5-kdc (Ubuntu 26.04 LTS)
- libkrb5-3 (Ubuntu 26.04 LTS)
- krb5-admin-server (Ubuntu 24.04 LTS)
- krb5-kdc (Ubuntu 24.04 LTS)
Fixed in:
- krb5-admin-server=1.22.1-2ubuntu4.1
- krb5-kdc=1.22.1-2ubuntu4.1
- libkrb5-3=1.22.1-2ubuntu4.1
- krb5-admin-server=1.20.1-6ubuntu2.7
- krb5-kdc=1.20.1-6ubuntu2.7
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