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Fedora 43 tmux Update 3.7b Security Advisory FEDORA-2026-7fa12630d5

fedora
Calendar Grey July 11, 2026
Dist Fedora Esm H88
Fedora 43 updates tmux to version 3.7b fixing use-after-free issues and improving functionality. Stay secure!
fdf6afc update to 3.7b fixes rhbz#2498485 CHANGES FROM 3.7a TO 3.7b Fix so that the end of a synchronized update again triggers a redraw

Summary

tmux is a "terminal multiplexer." It enables a number of terminals (or

windows) to be accessed and controlled from a single terminal. tmux is

intended to be a simple, modern, BSD-licensed alternative to programs such

as GNU Screen.

Update Information:

fdf6afc update to 3.7b fixes rhbz#2498485 CHANGES FROM 3.7a TO 3.7b Fix so that the end of a synchronized update again triggers a redraw. CHANGES FROM 3.7 TO 3.7a Fix crash in break-pane when no name is provided. Scrollbar options are now cached rather than being looked up for every redraw (issue 5298). Only forbid #( in names, allow #[, empty names, : and .

Topics%20covered

Topics Covered

security advisory fedora update bug use-after-free tmux

Change Log

* Thu Jul 9 2026 Filipe Rosset - 3.7b-3 - RPMAUTOSPEC: unresolvable merge

References


[ 1 ] Bug #2487530 - CVE-2026-11623 tmux: tmux: Use-after-free vulnerability [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2487530 [ 2 ] Bug #2498485 - update to 3.7b https://bugzilla.redhat.com/show_bug.cgi?id=2498485

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-7fa12630d5' 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
important
Lowest
Low
Medium
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Critical

Name: tmux
Product: Fedora 43
Version: 3.7b
Release: 3.fc43
URL: https://tmux.github.io/
Summary: A terminal multiplexer

Topics%20covered

Topics Covered

security advisory fedora update bug use-after-free tmux

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