========================================================================== Ubuntu Security Notice USN-7912-1 December 04, 2025
cups vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: CUPS could be made to stop responding if it received specially crafted network traffic. Software Description: - cups: Common UNIX Printing System(tm) Details: Johannes Meixner and Paul Zirnik discovered that CUPS incorrectly handled clients that send messages slowly. A remote attacker could possibly use this issue to cause CUPS to stop responding, resulting in a denial of service. (CVE-2025-58436) In addition, this update fixes a regression introduced in USN-7897-1 which resulted in certain invalid configuration file directives to cause the CUPS daemon to fail to start. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 cups 2.4.12-0ubuntu3.5 cups-daemon 2.4.12-0ubuntu3.5 Ubuntu 25.04 cups 2.4.12-0ubuntu1.6 cups-daemon 2.4.12-0ubuntu1.6 Ubuntu 24.04 LTS cups 2.4.7-1.2ubuntu7.9 cups-daemon 2.4.7-1.2ubuntu7.9 Ubuntu 22.04 LTS cups 2.4.1op1-1ubuntu4.16 cups-daemon 2.4.1op1-1ubuntu4.16 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7912-1 CVE-2025-58436, https://launchpad.net/bugs/2133207 Package Information: https://launchpad.net/ubuntu/+source/cups/2.4.12-0ubuntu3.5 https://launchpad.net/ubuntu/+source/cups/2.4.12-0ubuntu1.6 https://launchpad.net/ubuntu/+source/cups/2.4.7-1.2ubuntu7.9 https://launchpad.net/ubuntu/+source/cups/2.4.1op1-1ubuntu4.16
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