Home / mailingsPDF  

[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

--===============9079794583182509903==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

TOP