From: Slackware Security Team <security@slackware.com>
To: slackware-security@slackware.com
Subject: [slackware-security] expat (SSA:2026-306-01)
Date: Mon, 2 Nov 2026 21:30:22 -0800 (PST)





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[slackware-security] expat (SSA:2026-306-01)

New expat packages are available for Slackware 15.0 and -current to
fix security issues.


Here are the details from the Slackware 15.0 ChangeLog:
+--------------------------+
patches/packages/expat-2.10.0-i586-1_slack15.0.txz: Upgraded.
This update fixes security issues:
Fix denial of service with use of `XML_ParserReset`.
Detect billion laughs attacks quicker and more of its variations. Related
payload fuzzer at: https://github.com/hannob/lololol
Please note that a layer of compression around XML can significantly reduce
the minimum attack payload size.
Fix initial non-final empty subparser parse calls. Was segfaulting
previously.
Protect `attIndex` and `nPrefixes` in function `storeAtts` from signed
integer overflow.
For more information, see:
https://www.cve.org/CVERecord?id=CVE-2026-113351
https://www.cve.org/CVERecord?id=CVE-2026-115506
https://www.cve.org/CVERecord?id=CVE-2026-117610
https://www.cve.org/CVERecord?id=CVE-2026-118370
(* Security fix *)
+--------------------------+


Where to find the 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/expat-2.10.0-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-2.10.0-x86_64-1_slack15.0.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/expat-2.10.0-i686-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/expat-2.10.0-x86_64-1.txz


MD5 signatures:
+-------------+

Slackware 15.0 package:
59bd93f2cdf04c1ea7c3b149621a3ad3 expat-2.10.0-i586-1_slack15.0.txz

Slackware x86_64 15.0 package:
74ff8537d363292c83882a18d4b5e982 expat-2.10.0-x86_64-1_slack15.0.txz

Slackware -current package:
032b08f5c1f1ea257b22e1fa1802a575 l/expat-2.10.0-i686-1.txz

Slackware x86_64 -current package:
2a8a3b56bb27ce76bf24e845a1538580 l/expat-2.10.0-x86_64-1.txz


Installation instructions:
+------------------------+

Upgrade the package as root:
# upgradepkg expat-2.10.0-i586-1_slack15.0.txz


+-----+

Slackware Linux Security Team
http://slackware.com/gpg-key
security@slackware.com

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