PT-2026-30925 · Openprinting · Cups

Published 2026-04-07 · Updated 2026-04-07 · CVE-2026-39316

Mitre

CVSS v3.1

4.0

Medium

AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving cupsd subscription t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap grooming, this can be leveraged for code execution.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-39316

Affected Products

Cups

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-39316 · Security Note
• https://github.com/OpenPrinting/cups/security/advisories/GHSA-pjv5-prqp-46rg · Note