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Ubuntu Security Notice USN-7564-1
June 10, 2025

samba vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04

Summary:

Samba could allow unintended access to network services.

Software Description:
- samba: SMB/CIFS file, print, and login server for Unix

Details:

It was discovered that Samba incorrectly handled certain group membership
changes when using Kerberos authentication. A remote user could possibly
use this issue to continue to access resources after being removed by an
administrator.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.04
  samba                           2:4.21.4+dfsg-1ubuntu3.1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7564-1
  CVE-2025-0620

Package Information:
  https://launchpad.net/ubuntu/+source/samba/2:4.21.4+dfsg-1ubuntu3.1