NULL pointer dereference in cups - CVE-2026-107888

Vulnerability details

The vulnerability allows a local privileged user to cause a scheduler-wide denial of service.

The vulnerability exists due to a null pointer dereference in cupsdCheckJobs() when processing a held-on-create job whose temporary printer has been automatically deleted. A local privileged user can create a temporary printer, enable job acceptance and holding of new jobs, and submit a job while its device probe is pending to cause a scheduler-wide denial of service.

The demonstrated sequence requires access to the local CUPS Unix domain socket. A failed device probe makes the temporary printer immediately eligible for automatic removal.

Affected software

How to mitigate CVE-2026-107888

External References

• https://github.com/OpenPrinting/cups/security/advisories/GHSA-qqm8-4q5h-jg55

Related Security Bulletins

• Multiple vulnerabilities in cups
• Anolis OS update for cups