From: Slackware Security Team <security@slackware.com>
To: slackware-security@slackware.com
Subject: [slackware-security] libarchive (SSA:2026-103-01)
Date: Mon, 13 Apr 2026 15:01:12 -0700 (PDT)





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[slackware-security] libarchive (SSA:2026-103-01)

New libarchive 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/libarchive-3.8.7-i586-1_slack15.0.txz: Upgraded.
Libarchive 3.8.7 is a security and bugfix release.
Notable fixes:
CAB: fix NULL pointer dereference during skip (#2900)
CAB: Fix Heap OOB Write in CAB LZX decoder (#2919)
cpio: various fixes and improvements (#2899, #2908, #2910, #2939)
contrib/untar: fix out-of-bounds read (#2903)
iso9660: fix undefined behavior (#2897)
iso9660: fix posibble heap buffer overflow on 32-bit systems (#2934)
libarchive: fix handling of option failures (#2871)
libarchive: do not continue with truncated numbers (#2911)
libarchive: lzop and grzip filter support (#2947)
RAR: fix LZSS window size mismatch after PPMd block (#2898)
(* 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/libarchive-3.8.7-i586-1_slack15.0.txz

Updated package for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/libarchive-3.8.7-x86_64-1_slack15.0.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/libarchive-3.8.7-i686-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/libarchive-3.8.7-x86_64-1.txz


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

Slackware 15.0 package:
7876af266a94cbedca91db264fb5bdf7 libarchive-3.8.7-i586-1_slack15.0.txz

Slackware x86_64 15.0 package:
89184aa36a2741523781e2b57645ca01 libarchive-3.8.7-x86_64-1_slack15.0.txz

Slackware -current package:
d8c225f39d6a48bfbb8bd8a7b50e4c89 l/libarchive-3.8.7-i686-1.txz

Slackware x86_64 -current package:
9914a5e0ae8dc66d688031ed48f26b14 l/libarchive-3.8.7-x86_64-1.txz


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

Upgrade the package as root:
# upgradepkg libarchive-3.8.7-i586-1_slack15.0.txz


+-----+

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

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