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Ubuntu 20.04 LTS: Samba Important Code Exec Risk USN-7826-2 CVE-2025-10230

ubuntu
Calendar Grey October 20, 2025
Dist Ubuntu Esm H88
Critical Samba updates resolve security threats on multiple Ubuntu versions. Immediate action is required for safety.
Several security issues were fixed in Samba.

Summary

Several security issues were fixed in Samba.

Software Description:

- samba: SMB/CIFS file, print, and login server for Unix

Details:

USN-7826-1 fixed vulnerabilities in Samba. This update provides the

corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu

18.04 LTS and Ubuntu 20.04 LTS.

Original advisory 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)

Topics%20covered

Topics Covered

security advisory security issue code execution samba Ubuntu important

Update Instructions

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

Ubuntu 20.04 LTS
  samba                           2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  samba                           2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  samba                           2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  samba                           2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15
                                  Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-7826-2

https://ubuntu.com/security/notices/USN-7826-1

CVE-2025-10230, CVE-2025-9640

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7826-2

Topics%20covered

Topics Covered

security advisory security issue code execution samba Ubuntu important

Package Information

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