CVEvulnerability
CVE-2026-39316
6.2 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-07
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.0 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS 3.1 ([email protected])
- 6.2 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-416
Description
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.
Affected configurations
• openprinting cups (<= 2.4.16)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-pjv5-prqp-46rg Exploit, Mitigation, Vendor Advisory