========================================================================== Ubuntu Security Notice USN-8435-1 June 16, 2026
squid vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in Squid. Software Description: - squid: Web proxy cache server Details: It was discovered that Squid incorrectly handled FTP gateway processing under certain circumstances, which could result in an out-of-bounds read. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2026-47729) It was discovered that Squid incorrectly handled cache digest processing under certain circumstances, which could result in a heap-based buffer overflow. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-50012) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS squid 7.2-2ubuntu2.2 Ubuntu 25.10 squid 6.14-0ubuntu0.25.10.4 Ubuntu 24.04 LTS squid 6.14-0ubuntu0.24.04.4 Ubuntu 22.04 LTS squid 5.9-0ubuntu0.22.04.7 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8435-1 CVE-2026-47729, CVE-2026-50012 Package Information: https://launchpad.net/ubuntu/+source/squid/7.2-2ubuntu2.2 https://launchpad.net/ubuntu/+source/squid/6.14-0ubuntu0.25.10.4 https://launchpad.net/ubuntu/+source/squid/6.14-0ubuntu0.24.04.4 https://launchpad.net/ubuntu/+source/squid/5.9-0ubuntu0.22.04.7
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