Slackware 15.0 expat Critical DoS Buffer Overflow Vuln 2026-031-01
slackware
January 31, 2026
New expat 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/expat-2.7.4-i586-1_slack15.0.txz: Upgraded. This update fixes security issues: Function XML_ExternalEntityParserCreate failed to copy the encoding handler data passed to XML_SetUnknownEncodingHandler from the parent to the new subparser. This can cause a NULL dereference and denial of service. Integer overflow related to buffer size determination in function doContent. For more information, see: https://www.cve.org/CVERecord?id=CVE-2026-24515 https://www.cve.org/CVERecord?id=CVE-2026-25210 (* 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/expat-2.7.4-i586-1_slack15.0.txz
Updated package for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/expat-2.7.4-x86_64-1_slack15.0.txz
Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/expat-2.7.4-i686-1.txz
Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/expat-2.7.4-x86_64-1.txz
MD5 Signatures
Slackware 15.0 package:
083830a41701bde1462e7429ee7f75b3 expat-2.7.4-i586-1_slack15.0.txz
Slackware x86_64 15.0 package:
fb90aa28b552cd61dc110fda050d3471 expat-2.7.4-x86_64-1_slack15.0.txz
Slackware -current package:
d0c21e7d217c121e0c3edf234d79ae32 l/expat-2.7.4-i686-1.txz
Slackware x86_64 -current package:
9aba55f902aeb6a3f2c901ebd76f332f l/expat-2.7.4-x86_64-1.txz
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Topics Covered
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Installation Instructions
Installation instructions: Upgrade the package as root: # upgradepkg expat-2.7.4-i586-1_slack15.0.txz
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