Linuxsecurity Fedora tmux 3.7b Update Addresses Use-After-Free Vulnerability
Article Content
- •CVE-2026-11623 is a use-after-free vulnerability in tmux affecting Fedora systems.
- •Fedora 43 and 44 have released updates to version 3.7b to mitigate the vulnerability.
- •Users are urged to apply the updates using the dnf update program to ensure system security.
A use-after-free vulnerability (CVE-2026-11623) was identified in tmux affecting Fedora systems. The flaw could lead to crashes and potential exploitation if not patched. Fedora has released updates for both Fedora 43 and 44 to address this issue, specifically updating tmux to version 3.7b. The updates include fixes for several bugs, including a crash in break-pane when no name is provided. Users are advised to upgrade their tmux installations using the dnf update program. The vulnerability was published on June 9, 2026, and affects all users of tmux in Fedora distributions. The updates were made available on July 9, 2026, and are critical for maintaining system stability and security.
Ask AI about this cluster
Answers cite the sources they use
Timeline
More articles in this cluster (2)
Following this threat?
Track Fedora and CVE-2026-11623 in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.
Free account · no card needed
Continue Reading
CVE-2015-3306 Exploited in ProFTPD FTP Servers CVE-2015-3306, a vulnerability in ProFTPD 1.3.5, allows remote attackers to read and write arbitrary files using the SITE CPFR and SITE CPTO commands. This exploit can lead to unauthorized access and potential remote code execution, as the commands are executed with the privileges of the ProFTPD service. Active… 
CISA Mandates Urgent Patching of Five Critical Flaws Exploited by Flax Typhoon The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has ordered federal agencies to patch five critical vulnerabilities by October 11, 2026, following exploitation by the China-linked hacking group Flax Typhoon. The vulnerabilities, added to CISA's Known Exploited Vulnerabilities (KEV) catalog, include…