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Slackware 15.0 Mozilla-Firefox Important Security Fix SSA-2026-168-03

slackware
Calendar Grey June 17, 2026
Dist Slackware Esm H88
New mozilla-firefox packages fix security issues for Slackware 15.0 and -current versions.
New mozilla-firefox packages are available for Slackware 15.0 and -current to fix security issues.

Summary

Here are the details from the Slackware 15.0 ChangeLog: patches/packages/mozilla-firefox-140.12.0esr-i686-1_slack15.0.txz: Upgraded. This update contains security fixes and improvements. For more information, see: https://www.mozilla.org/en-US/firefox/140.12.0/releasenotes/ https://www.mozilla.org/security/advisories/mfsa2026-58 https://www.cve.org/CVERecord?id=CVE-2026-12289 https://www.cve.org/CVERecord?id=CVE-2026-12290 https://www.cve.org/CVERecord?id=CVE-2026-12291 https://www.cve.org/CVERecord?id=CVE-2026-12292 https://www.cve.org/CVERecord?id=CVE-2026-12294 https://www.cve.org/CVERecord?id=CVE-2026-12295 https://www.cve.org/CVERecord?id=CVE-2026-12298 https://www.cve.org/CVERecord?id=CVE-2026-12296 https://www.cve.org/CVERecord?id=CVE-2026-12297 https://www.cve.org/CVERecord?id=CVE-2026-12299 https://www.cve.org/CVERecord?id=CVE-2026-12329 https://www.cve.org/CVERecord?id=CVE-2026-12302

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory moderate security issue buffer overflow slackware mozilla firefox

Where Find New Packages

Thanks to the friendly folks at the OSU Open Source Lab (http://osuosl.org) for donating FTP and rsync hosting to the Slackware project! :-)
Also see the "Get Slack" section on http://slackware.com 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-140.12.0esr-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-140.12.0esr-x86_64-1_slack15.0.txz
Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/xap/mozilla-firefox-140.12.0esr-i686-1.txz
Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/xap/mozilla-firefox-140.12.0esr-x86_64-1.txz

MD5 Signatures

Slackware 15.0 package: 9a7c2ffc7fc6598e51c0a8400d5a5a30 mozilla-firefox-140.12.0esr-i686-1_slack15.0.txz
Slackware x86_64 15.0 package: 1cb4d49e48dbde82e77cd1da31192592 mozilla-firefox-140.12.0esr-x86_64-1_slack15.0.txz
Slackware -current package: 558c5c9a66ecc55ebdda6fe76cd67630 xap/mozilla-firefox-140.12.0esr-i686-1.txz
Slackware x86_64 -current package: faa12d5490361f40a0d44aedd9bf199a xap/mozilla-firefox-140.12.0esr-x86_64-1.txz

Severity
important
Lowest
Low
Medium
High
Critical

Topics%20covered

Topics Covered

security advisory moderate security issue buffer overflow slackware mozilla firefox

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Installation Instructions

Installation instructions: Upgrade the package as root: # upgradepkg mozilla-firefox-140.12.0esr-i686-1_slack15.0.txz

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