From: Slackware Security Team <security@slackware.com>
To: slackware-security@slackware.com
Subject: [slackware-security] xz (SSA:2026-252-01)
Date: Wed, 9 Sep 2026 17:20:29 -0700 (PDT)





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[slackware-security] xz (SSA:2026-252-01)

New xz packages are available for Slackware 15.0 and -current to fix
a security issue.


Here are the details from the Slackware 15.0 ChangeLog:
+--------------------------+
patches/packages/xz-5.8.4-i586-1_slack15.0.txz: Upgraded.
This update fixes a security issue:
liblzma: lzma_alone_decoder(), lzma_lzip_decoder(), lzma_auto_decoder(),
and lzma_microlzma_decoder(): Fix an invalid memory access after memory
allocation has failed and the application reinitializes the existing
decoder to decode a different file. This bug could at least result in a
crash.
For more information, see:
https://github.com/tukaani-project/xz/security/advisories/GHSA-5qpq-xqfv-j9pg
(* 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/xz-5.8.4-i586-1_slack15.0.txz

Updated package for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xz-5.8.4-x86_64-1_slack15.0.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/a/xz-5.8.4-i686-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/a/xz-5.8.4-x86_64-1.txz


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

Slackware 15.0 package:
3486caf25b9965e8dc5027d3319aad07 xz-5.8.4-i586-1_slack15.0.txz

Slackware x86_64 15.0 package:
886f171f5d244032384ee679446ad3bb xz-5.8.4-x86_64-1_slack15.0.txz

Slackware -current package:
7e84370486e0f7a451a765ab0b76ea8f a/xz-5.8.4-i686-1.txz

Slackware x86_64 -current package:
d329d4aa92814fcbb5984638628fe1f7 a/xz-5.8.4-x86_64-1.txz


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

Upgrade the package as root:
# upgradepkg xz-5.8.4-i586-1_slack15.0.txz


+-----+

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

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