USN-7912-1 fixed vulnerabilities in CUPS. This update provides the corresponding update for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory 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.
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