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Slackware 15.0 libarchive Significant Security Update Alert SSA-2026-071-03

slackware
Calendar Grey March 11, 2026
Dist Slackware Esm H88
Security fix for Slackware's libarchive addresses critical bugs and vulnerabilities impacting system integrity and functionality.
New libarchive 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/libarchive-3.8.6-i586-1_slack15.0.txz: Upgraded. This update fixes bugs and security issues: libarchive: fix incompatibility with Nettle 4.x (#2858) libarchive: fix NULL pointer dereference in archive_acl_from_text_w() (#2859) bsdunzip: fix ISO week year and Gregorian year confusion (#2860) 7zip: ix SEGV in check_7zip_header_in_sfx via ELF offset validation (#2864) 7zip: fix out-of-bounds access on ELF 64-bit header (#2875) RAR5 reader: fix infinite loop in rar5 decompression (#2877) RAR5 reader: fix potential memory leak (#2892) RAR5: fix SIGSEGV when archive_read_support_format_rar5 is called twice (#2893) CAB reader: fix memory leak on repeated calls to archive_read_support_format_cab (#2895) mtree reader: Fix file descriptor leak in mtree parser cleanup (CWE-775, #2878) various small bugfixes in code and documentation (* Security fix *)

Topics%20covered

Topics Covered

security advisory buffer overflow critical slackware memory leak archive issue

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/libarchive-3.8.6-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-3.8.6-x86_64-1_slack15.0.txz
Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/libarchive-3.8.6-i686-1.txz
Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/libarchive-3.8.6-x86_64-1.txz

MD5 Signatures

Slackware 15.0 package: 1469605a8cec4e66d7a16926ca13aec6 libarchive-3.8.6-i586-1_slack15.0.txz
Slackware x86_64 15.0 package: 3d55f09d648863928671f010a3fe4628 libarchive-3.8.6-x86_64-1_slack15.0.txz
Slackware -current package: 3ef64b383d3f537142d73d2bce6d784b l/libarchive-3.8.6-i686-1.txz
Slackware x86_64 -current package: fafea232f0960e2aa345e5e3cf3ae152 l/libarchive-3.8.6-x86_64-1.txz

Severity
critical
Lowest
Low
Medium
High
Critical

Topics%20covered

Topics Covered

security advisory buffer overflow critical slackware memory leak archive issue

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Installation Instructions

Installation instructions: Upgrade the package as root: # upgradepkg libarchive-3.8.6-i586-1_slack15.0.txz

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