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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: "ubuntu-security-announce@lists.ubuntu.com"
 <ubuntu-security-announce@lists.ubuntu.com>
Message-ID: <7d8a6bef-935d-4e7e-88c7-faab18f6b1b8@canonical.com>
Subject: [USN-7536-2] cifs-utils regression
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==========================================================================
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

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