{"id":"CVE-2026-107886","published":"2026-10-09T04:18:05.163","lastModified":"2026-10-09T18:17:06.273","description":"OpenPrinting CUPS before 2.4.20 contains a double-free in printer-class management. When CUPS-Add-Modify-Class replaces an existing class member list, add_class() frees pclass->printers without clearing the pointer. If subsequent validation fails, the class retains the dangling pointer; CUPS-Delete-Class subsequently frees the same allocation in cupsdDeletePrinter(). A client authorized to modify and delete classes can cause scheduler-wide denial of service. The default policy requires @SYSTEM privileges.","cvssScore":2.3,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L","cwes":["CWE-415"],"vendors":[],"products":[],"references":[{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22","tags":[]},{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22","tags":[]}],"exploitRefs":[{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22","tags":[]},{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22","tags":[]}],"hasPoc":true,"ai":null}