Home / mailings [USN-7826-1] Samba vulnerabilities
Posted on 16 October 2025
Ubuntu Security==========================================================================Ubuntu Security Notice USN-7826-1
October 16, 2025
samba vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
Several security issues were fixed in Samba.
Software Description:
- samba: SMB/CIFS file, print, and login server for Unix
Details:
Andrew Walker discovered that Samba incorrectly initialized memory in the
vfs_streams_xattr module. An authenticated attacker could possibly use this
issue to obtain sensitive information. (CVE-2025-9640)
Igor Morgenstern discovered that Samba incorrectly handled names passed to
the WINS hook program. An attacker could possibly use this issue to execute
arbitrary code. (CVE-2025-10230)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
samba 2:4.22.3+dfsg-4ubuntu2.1
Ubuntu 25.04
samba 2:4.21.4+dfsg-1ubuntu3.5
Ubuntu 24.04 LTS
samba 2:4.19.5+dfsg-4ubuntu9.4
Ubuntu 22.04 LTS
samba 2:4.15.13+dfsg-0ubuntu1.10
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-7826-1
CVE-2025-10230, CVE-2025-9640
Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.22.3+dfsg-4ubuntu2.1
https://launchpad.net/ubuntu/+source/samba/2:4.21.4+dfsg-1ubuntu3.5
https://launchpad.net/ubuntu/+source/samba/2:4.19.5+dfsg-4ubuntu9.4
https://launchpad.net/ubuntu/+source/samba/2:4.15.13+dfsg-0ubuntu1.10
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