Alerts This Week
Warning Icon 1 1,154
Alerts This Week
Warning Icon 1 1,154

Fedora 43 Squid 7.5 Critical Update Denial of Service 2026-e6a4814a4d

fedora
Calendar Grey May 6, 2026
Dist Fedora Esm H88
Fedora 43 Squid 7.5 update resolves Critical security issues and Denial of Service risks.
new version 7.5 security update

Summary

Squid is a high-performance proxy caching server for Web clients,

supporting FTP and HTTP data objects. Unlike traditional

caching software, Squid handles all requests in a single,

non-blocking, I/O-driven process. Squid keeps meta data and especially

hot objects cached in RAM, caches DNS lookups, supports non-blocking

DNS lookups, and implements negative caching of failed requests.

Squid consists of a main server program squid, a Domain Name System

lookup program (dnsserver), a program for retrieving FTP data

(ftpget), and some management and client tools.

Update Information:

new version 7.5 security update

Topics%20covered

Topics Covered

security advisory fedora critical DoS squid heap issue

Change Log

* Mon Apr 27 2026 Lubo\u0161 Uhliarik - 7:7.5-1 - new version 7.5

References


[ 1 ] Bug #2431445 - squid-7.5 is available https://bugzilla.redhat.com/show_bug.cgi?id=2431445 [ 2 ] Bug #2451599 - CVE-2026-33526 squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2451599 [ 3 ] Bug #2451601 - CVE-2026-32748 squid: Squid: Denial of Service via crafted ICP traffic [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2451601

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-e6a4814a4d' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
Lowest
Low
Medium
High
Critical

Name: squid
Product: Fedora 43
Version: 7.5
Release: 1.fc43
URL: http://www.squid-cache.org
Summary: The Squid proxy caching server

Topics%20covered

Topics Covered

security advisory fedora critical DoS squid heap issue

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here