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Slackware Firefox Update 2026-247-02 CVE-2026-75874 CVE-2026

Linuxsecurity •LinuxSecurity Advisories • September 5, 2026

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Here are the details from the Slackware 15.0 ChangeLog: patches/packages/mozilla-firefox-140.15.0esr-i686-1_slack15.0.txz: Upgraded. This update contains security fixes and improvements. For more information, see: (* Security fix *)

Where Find New Packages

Thanks to the friendly folks at the OSU Open Source Lab ( for donating FTP and rsync hosting to the Slackware project! :-) Also see the "Get Slack" section on for additional mirror sites near you. Updated package for Slackware 15.0: ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/mozilla-firefox-140.15.0esr-i686-1_slack15.0.txz Updated package for Slackware x86_64 15.0: ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/mozilla-firefox-140.15.0esr-x86_64-1_slack15.0.txz Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/xap/mozilla-firefox-153.2.0esr-i686-2.txz Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/xap/mozilla-firefox-153.2.0esr-x86_64-2.txz

Slackware 15.0 package: 2c902a207d6ea6693527191c8d57518e mozilla-firefox-140.15.0esr-i686-1_slack15.0.txz Slackware x86_64 15.0 package: 0c26cbd683b7b2597430f894fc1f9e53 mozilla-firefox-140.15.0esr-x86_64-1_slack15.0.txz Slackware -current package: 978d48a968b37b71351d85be43d399d9 xap/mozilla-firefox-153.2.0esr-i686-2.txz Slackware x86_64 -current package: 4a329e27d491f0499fd34420cec11bc3 xap/mozilla-firefox-153.2.0esr-x86_64-2.txz

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Installation Instructions

Installation instructions: Upgrade the package as root: # upgradepkg mozilla-firefox-140.15.0esr-i686-1_slack15.0.txz

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The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Slackware Security Updates Address Multiple Vulnerabilities On September 7, 2026, Slackware released critical security updates for three packages: util-linux, libpcap, and libxml2. The updates address various vulnerabilities affecting Slackware 15.0 and its current version. The util-linux package was upgraded to version 2.42.3, fixing bugs and security issues. The libpcap package was updated to version 1.10.7, resolving multiple vulnerabilities. Additionally, libxml2 was rebuilt to correctly apply patches. Users are urged to upgrade their packages to mitigate potential security risks. The updates are available for both i586 and x86_64 architectures. No specific CVEs were mentioned in the advisories, but the updates are essential for maintaining system security. 5 sources 45

Extracted Entities

Slackware Firefox Update 2026-247-02 CVE-2026-75874 CVE-2026

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Extracted Entities

CVEs (1)

Domains (1)

MD5 Hashes (4)