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Fedora 43 Samba Critical Remote Code Execution Fix 2026-fc81581a79

fedora
Calendar Grey June 5, 2026
Dist Fedora Esm H88
Samba 4.23.8 released for Fedora 43 fixes critical remote execution issues. Ensure timely updates to safeguard systems.
Update to Samba 4.23.8 - Security fix for CVE-2026-4480, CVE-2026-2340, CVE-2026-3012, CVE-2026-1933, CVE-2026-4408, and CVE-2026-3238

Summary

Samba is the standard Windows interoperability suite of programs for Linux and

Unix.

Update Information:

Update to Samba 4.23.8 - Security fix for CVE-2026-4480, CVE-2026-2340, CVE-2026-3012, CVE-2026-1933, CVE-2026-4408, and CVE-2026-3238

Topics%20covered

Topics Covered

security advisory fedora critical remote code execution samba security fix

Change Log

* Thu May 28 2026 Günther Deschner - 2:4.23.8-1 - Update to Samba 4.23.8 - resolves: rhbz#2481447 - Security fix for CVE-2026-4480 - resolves: rhbz#2481875 - Security fix for CVE-2026-2340 - resolves: rhbz#2481857 - Security fix for CVE-2026-3012 - resolves: rhbz#2481876 - Security fix for CVE-2026-1933 - Security fix for CVE-2026-4408 - Security fix for CVE-2026-3238

References


[ 1 ] Bug #2481447 - CVE-2026-4480 samba: Samba: Remote Code Execution in printing subsystem via unescaped job description [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2481447 [ 2 ] Bug #2481857 - CVE-2026-3012 samba: group policy certificate enrollment uses http:// without validation [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2481857 [ 3 ] Bug #2481875 - CVE-2026-2340 samba: vfs_worm does not block directory modification [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2481875 [ 4 ] Bug #2481876 - CVE-2026-1933 samba: Missing access check on reparse point operations [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2481876

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-fc81581a79' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
Lowest
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Critical

Name: samba
Product: Fedora 43
Version: 4.23.8
Release: 1.fc43
URL: https://www.samba.org
Summary: Server and Client software to interoperate with Windows machines

Topics%20covered

Topics Covered

security advisory fedora critical remote code execution samba security fix

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