Details USN-8405-1 fixed vulnerabilities in CUPS. The update introduced a regression that cause CUPS to crash when parsing certain large printer PPD files. This update fixes the problem. Original advisory details: Ariel Silver discovered that CUPS incorrectly handled username comparisons during authorization checks. A local attacker could possibly use this issue to gain unauthorized access to restricted operations. (CVE-2026-27447) Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled notify-recipient-uri values in the RSS notifier. A remote attacker could possibly use this issue to overwrite lp-writable files and cause a denial of service. (CVE-2026-34978) Jacob Newman discovered that CUPS incorrectly handled filter option strings when processing job attributes. An attacker…