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Alerts This Week
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Ubuntu 25.04: USN-7564-1 critical: samba access control issue

ubuntu
Calendar Grey June 10, 2025
Scroller Ubuntu
Ubuntu has issued a security alert about a Samba flaw that could enable unauthorized network access. Users should update to the latest packages to fix this issue
Samba could allow unintended access to network services.

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.

Topics%20covered

Topics Covered

security advisory access control samba Ubuntu authentication issue network services

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

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7564-1

Topics%20covered

Topics Covered

security advisory access control samba Ubuntu authentication issue network services

Package Information

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

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