USN-8157-1: Squid vulnerabilities

Publication date

8 April 2026

Overview

Several security issues were fixed in Squid.


Packages

  • squid - Web proxy cache server

Details

It was discovered that Squid incorrectly handled certain ICP traffic. In
environments where ICP support is enabled, a remote attacker could use this
issue to cause Squid to crash, resulting in a denial of service, or obtain
small amounts of sensitive information.

It was discovered that Squid incorrectly handled certain ICP traffic. In
environments where ICP support is enabled, a remote attacker could use this
issue to cause Squid to crash, resulting in a denial of service, or obtain
small amounts of sensitive information.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
25.10 questing squid –  6.14-0ubuntu0.25.10.2
24.04 LTS noble squid –  6.14-0ubuntu0.24.04.2
22.04 LTS jammy squid –  5.9-0ubuntu0.22.04.5

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