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Slackware 15.0 Mozilla-Firefox Critical Heap Buffer Overflow 2026-047-03

slackware
Calendar Grey February 16, 2026
Dist Slackware Esm H88
New mozilla-firefox packages for Slackware fix a critical heap buffer overflow vulnerability. Update recommended.
New mozilla-firefox packages are available for Slackware 15.0 and -current to fix a security issue.

Summary

Here are the details from the Slackware 15.0 ChangeLog: patches/packages/mozilla-firefox-140.7.1esr-i686-1_slack15.0.txz: Upgraded. This update contains a security fix: Heap buffer overflow in libvpx. For more information, see: https://www.mozilla.org/en-US/firefox/140.7.1/releasenotes/ https://www.mozilla.org/security/advisories/mfsa2026-10/ https://www.cve.org/CVERecord?id=CVE-2026-2447 (* Security fix *)

Topics%20covered

Topics Covered

security advisory security issue critical slackware mozilla firefox heap buffer overflow

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-140.7.1esr-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-140.7.1esr-x86_64-1_slack15.0.txz
Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/xap/mozilla-firefox-140.7.1esr-i686-1.txz
Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/xap/mozilla-firefox-140.7.1esr-x86_64-1.txz

MD5 Signatures

Slackware 15.0 package: 018fc1430949692045989e41d955b350 mozilla-firefox-140.7.1esr-i686-1_slack15.0.txz
Slackware x86_64 15.0 package: 5af41a5705846a3d8ee3967767924a1b mozilla-firefox-140.7.1esr-x86_64-1_slack15.0.txz
Slackware -current package: e86b0d6b35b638b2c37ed1cc7828f308 xap/mozilla-firefox-140.7.1esr-i686-1.txz
Slackware x86_64 -current package: 6a5b40d6e697d747c3b6dc1d7ccf6848 xap/mozilla-firefox-140.7.1esr-x86_64-1.txz

Severity
critical
Lowest
Low
Medium
High
Critical

Topics%20covered

Topics Covered

security advisory security issue critical slackware mozilla firefox heap buffer overflow

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Installation Instructions

Installation instructions: Upgrade the package as root: # upgradepkg mozilla-firefox-140.7.1esr-i686-1_slack15.0.txz

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