Slackware 15.0 libpng Critical Out-of-bounds Issue 2026-085-02
slackware
March 26, 2026
New libpng 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/libpng-1.6.56-i586-1_slack15.0.txz: Upgraded. This update fixes security issues: Use-after-free via pointer aliasing in png_set_tRNS and png_set_PLTE. Out-of-bounds read/write in the palette expansion on ARM Neon. For more information, see: https://www.cve.org/CVERecord?id=CVE-2026-33416 https://www.cve.org/CVERecord?id=CVE-2026-33636 (* Security fix *)
Topics Covered
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-1.6.56-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-1.6.56-x86_64-1_slack15.0.txz
Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/libpng-1.6.56-i686-1.txz
Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/libpng-1.6.56-x86_64-1.txz
MD5 Signatures
Slackware 15.0 package:
2e036f100e13c974643827a74c55ab5a libpng-1.6.56-i586-1_slack15.0.txz
Slackware x86_64 15.0 package:
b98998363184de799754fce3a269f8cb libpng-1.6.56-x86_64-1_slack15.0.txz
Slackware -current package:
eccb99e6b8fa649802c44466ebd8d7ed l/libpng-1.6.56-i686-1.txz
Slackware x86_64 -current package:
f579a18f2242eb3f4d27726593b6e676 l/libpng-1.6.56-x86_64-1.txz
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Topics Covered
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Installation Instructions
Installation instructions: Upgrade the package as root: # upgradepkg libpng-1.6.56-i586-1_slack15.0.txz
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