Vulnerability in OpenPrinting CUPS

[ Description ]Official description

OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference in cupsdCheckJobs() when a job marked job-held-on-create refers to a temporary printer that has been automatically deleted. Temporary-printer cleanup can remove the destination without canceling its held jobs, and the scheduler dereferences the NULL result of cupsdFindDest() while checking holding_new_jobs. This terminates cupsd and interrupts all queues managed by that process. In some plausible scenarios, an unprivileged submission can trigger this.

[ Fixes ]Fixes and patches

• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Advisories ]Government CERT advisories

• BSI CERT-Bund1 Oct 2026WID-SEC-2026-3715

  CUPS: Multiple vulnerabilities Translated from German

  CVE-2026-107890CVE-2026-107888

[ References ]References

• github.com/OpenPrinting/cups/security/advisories/GHSA-qqm8-4q5h-jg55ExploitPatchVendor Advisory