CVE-2026-107886

Description (CNA)

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.

Affected (CNA)

CWE

CWE-415

References

• https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22

ADP enrichment