A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS 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)
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.
https://ubuntu.com/security/notices/USN-7826-2
https://ubuntu.com/security/notices/USN-7826-1
CVE-2025-10230, CVE-2025-9640
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