USN-7804-1: Squid vulnerability

Publication date

6 October 2025

Overview

Squid could be made to crash if it received specially crafted network traffic.


Packages

  • squid - Web proxy cache server

Details

It was discovered that Squid incorrectly handled certain long SNMP OIDs. A
remote attacker could possibly use this issue to cause Squid to crash,
resulting in a denial of service.

It was discovered that Squid incorrectly handled certain long SNMP OIDs. A
remote attacker could possibly use this issue to cause Squid to crash,
resulting in a denial of service.

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
25.04 plucky squid –  6.13-1ubuntu1.1
24.04 noble squid –  6.13-0ubuntu0.24.04.2
22.04 jammy squid –  5.9-0ubuntu0.22.04.3

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Have additional questions?

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