OpenPrinting CUPS before 2.4.20 contains a double-free in printer-class management. When CUPS-Add-Modify-Class replaces an existing class member list, add_class() frees pclass->printers without clearing the pointer. If subsequent validation fails, the class retains the dangling pointer; CUPS-Delete-Class subsequently frees the same allocation in cupsdDeletePrinter(). A client authorized to modify and delete classes can cause scheduler-wide denial of service. The default policy requires @SYSTEM privileges.
Metrics
Affected Vendors & Products
Advisories
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Fixes
Solution
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Workaround
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References
History
Fri, 09 Oct 2026 04:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | OpenPrinting CUPS before 2.4.20 contains a double-free in printer-class management. When CUPS-Add-Modify-Class replaces an existing class member list, add_class() frees pclass->printers without clearing the pointer. If subsequent validation fails, the class retains the dangling pointer; CUPS-Delete-Class subsequently frees the same allocation in cupsdDeletePrinter(). A client authorized to modify and delete classes can cause scheduler-wide denial of service. The default policy requires @SYSTEM privileges. | |
| First Time appeared |
Openprinting
Openprinting cups |
|
| Weaknesses | CWE-415 | |
| CPEs | cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Openprinting
Openprinting cups |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-10-09T04:00:29.308Z
Reserved: 2026-10-09T04:00:28.517Z
Link: CVE-2026-107886
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-09T04:18:05.163
Modified: 2026-10-09T04:18:05.163
Link: CVE-2026-107886
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses