==========================================================================
Ubuntu Security Notice USN-7536-2
June 16, 2025

cifs-utils regression
==========================================================================

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

- Ubuntu 25.04
- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

USN-7536-1 introduced a regression in cifs-utils.

Software Description:
- cifs-utils: Common Internet File System utilities

Details:

USN-7536-1 fixed vulnerabilities in cifs-utils. This update introduced a
regression in certain environments. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

 It was discovered that cifs-utils incorrectly handled namespaces when
 obtaining Kerberos credentials. An attacker could possibly use this issue
 to obtain sensitive information.

Update instructions:

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

Ubuntu 25.04
  cifs-utils                      2:7.2-2ubuntu0.1

Ubuntu 24.10
  cifs-utils                      2:7.0-2.1ubuntu0.2

Ubuntu 24.04 LTS
  cifs-utils                      2:7.0-2ubuntu0.2

Ubuntu 22.04 LTS
  cifs-utils                      2:6.14-1ubuntu0.3

Ubuntu 20.04 LTS
  cifs-utils                      2:6.9-1ubuntu0.4

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

References:
  https://ubuntu.com/security/notices/USN-7536-2
  https://ubuntu.com/security/notices/USN-7536-1
  https://launchpad.net/bugs/2112614, https://launchpad.net/bugs/2113906

Package Information:
  https://launchpad.net/ubuntu/+source/cifs-utils/2:7.2-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/cifs-utils/2:7.0-2.1ubuntu0.2
  https://launchpad.net/ubuntu/+source/cifs-utils/2:7.0-2ubuntu0.2
  https://launchpad.net/ubuntu/+source/cifs-utils/2:6.14-1ubuntu0.3
  https://launchpad.net/ubuntu/+source/cifs-utils/2:6.9-1ubuntu0.4