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Slackware 15.0 libpng Significant Heap Overflow Patch SSA-2026-042-02

slackware
Calendar Grey February 11, 2026
Dist Slackware Esm H88
New libpng packages for Slackware address a heap overflow security issue, requiring immediate updates for system protection.
New libpng 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/libpng-1.6.55-i586-1_slack15.0.txz: Upgraded. Fixed a high severity security issue: Heap buffer overflow in `png_set_quantize`. Reported and fixed by Joshua Inscoe. For more information, see: https://www.cve.org/CVERecord?id=CVE-2026-25646 (* Security fix *)

Topics%20covered

Topics Covered

security advisory high severity security issue slackware libpng heap 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://www.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/libpng-1.6.55-i586-1_slack15.0.txz
Updated package for Slackware x86_64 15.0: ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/libpng-1.6.55-x86_64-1_slack15.0.txz
Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/libpng-1.6.55-i686-1.txz
Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/libpng-1.6.55-x86_64-1.txz

MD5 Signatures

Slackware 15.0 package: b8c6388882ce11d9980511d631a7081f libpng-1.6.55-i586-1_slack15.0.txz
Slackware x86_64 15.0 package: 980b9faf4fffacb2967c95501484d804 libpng-1.6.55-x86_64-1_slack15.0.txz
Slackware -current package: 02382db893ab6faee7a1e58e40201bff l/libpng-1.6.55-i686-1.txz
Slackware x86_64 -current package: 5cbe89190236dbdce06ab31194737284 l/libpng-1.6.55-x86_64-1.txz

Severity
critical
Lowest
Low
Medium
High
Critical

Topics%20covered

Topics Covered

security advisory high severity security issue slackware libpng heap overflow

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Installation Instructions

Installation instructions: Upgrade the package as root: # upgradepkg libpng-1.6.55-i586-1_slack15.0.txz

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