Home / mailings

PDF

[slackware-security] c-ares (SSA:2026-187-01)

Posted on 07 July 2026
Slackware Security

[slackware-security] c-ares (SSA:2026-187-01)

New c-ares 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/c-ares-1.34.7-i586-1_slack15.0.txz: Upgraded.
This release fixes the following security issues:
Use-after-free / double-free in c-ares' query-completion handling, remotely
triggerable via ares_getaddrinfo() over TCP.
CPU-exhaustion denial of service via unbounded DNS name compression pointer
chains.
Memory-amplification denial of service via unvalidated DNS header record
counts.
For more information, see:
https://www.cve.org/CVERecord?id=CVE-2026-33630
https://github.com/c-ares/c-ares/security/advisories/GHSA-6wfj-rwm7-3542
https://github.com/c-ares/c-ares/security/advisories/GHSA-pjmc-gx33-gc76
https://github.com/c-ares/c-ares/security/advisories/GHSA-jv8r-gqr9-68wj
(* 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/c-ares-1.34.7-i586-1_slack15.0.txz

Updated package for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/c-ares-1.34.7-x86_64-1_slack15.0.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/c-ares-1.34.7-i686-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/c-ares-1.34.7-x86_64-1.txz


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

Slackware 15.0 package:
e2e1d5fa19673361d0a09124739b7c36 c-ares-1.34.7-i586-1_slack15.0.txz

Slackware x86_64 15.0 package:
f5288e7966693f035164baddcfadb33e c-ares-1.34.7-x86_64-1_slack15.0.txz

Slackware -current package:
ece3bd50d8242ed6d3508cf1f2d773dd n/c-ares-1.34.7-i686-1.txz

Slackware x86_64 -current package:
dc2284c8f9da14be6ca705b9dc74116c n/c-ares-1.34.7-x86_64-1.txz


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

Upgrade the package as root:
# upgradepkg c-ares-1.34.7-i586-1_slack15.0.txz


+-----+

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

 

TOP