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Fedora 43 Samba Critical Remote Code Execution Vuln 2026-fc81581a79

fedora
Calendar Grey June 5, 2026
Scroller Fedora
Samba 4.23.8 update for Fedora fixes critical security issues affecting Samba services including remote code execution.
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 security issue fedora critical remote code execution samba

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
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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 security issue fedora critical remote code execution samba

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