OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference caused by repeated IPP group tags in job-creation requests. IPP parsing creates unnamed separator attributes with IPP_TAG_ZERO, but add_job() converts these separators to IPP_TAG_JOB. During job startup, get_options()/ipp_length() subsequently calls strlen() on a NULL attribute name, terminating cupsd and disrupting all queues. A single crafted Print-Job request can trigger the crash when the client can reach the scheduler and submit jobs to an accepting, enabled queue supporting the submitted document format. Anonymous submission is possible when permitted by listener and access-control configuration.
History

Tue, 13 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 10 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Title Null Pointer Dereference in CUPS via Malformed IPP Group Tags cups: cups: Denial of Service via repeated IPP group tags
References
Metrics threat_severity

None

threat_severity

Low


Fri, 09 Oct 2026 06:15:00 +0000

Type Values Removed Values Added
Title Null Pointer Dereference in CUPS via Malformed IPP Group Tags

Fri, 09 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
Description OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference caused by repeated IPP group tags in job-creation requests. IPP parsing creates unnamed separator attributes with IPP_TAG_ZERO, but add_job() converts these separators to IPP_TAG_JOB. During job startup, get_options()/ipp_length() subsequently calls strlen() on a NULL attribute name, terminating cupsd and disrupting all queues. A single crafted Print-Job request can trigger the crash when the client can reach the scheduler and submit jobs to an accepting, enabled queue supporting the submitted document format. Anonymous submission is possible when permitted by listener and access-control configuration.
First Time appeared Openprinting
Openprinting cups
Weaknesses CWE-476
CPEs cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*
Vendors & Products Openprinting
Openprinting cups
References
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-10-09T04:10:52.643Z

Updated: 2026-10-13T16:33:21.155Z

Reserved: 2026-10-09T04:10:51.860Z

Link: CVE-2026-107890

cve-icon Vulnrichment

Updated: 2026-10-13T16:33:14.716Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-09T05:16:44.730

Modified: 2026-10-20T20:53:19.570

Link: CVE-2026-107890

cve-icon Redhat

Severity : Low

Publid Date: 2026-10-09T04:10:52Z

Links: CVE-2026-107890 - Bugzilla