CVE-2026-53067 | Linux Kernel up to 6.18.32/7.0.9 PCI pci_epf_alloc_doorbell db_msg double free

A vulnerability has been found in Linux Kernel up to 6.18.32/7.0.9 and classified as critical. Affected by this vulnerability is the function pci_epf_alloc_doorbell of the component PCI. The manipulation of the argument db_msg leads to double free. This vulnerability is traded as CVE-2026-53067. Access to the local network is required for this attack to succeed. There is no exploit available. The affected component should be upgraded.