CVE-2026-43200

A flaw was found in the Linux kernel's PCI endpoint functionality. Incorrect parameter handling in the pci_primary_epc_epf_unlink() and pci_secondary_epc_epf_unlink() functions allows a local user to trigger a kernel crash. This occurs when the unlink command is used in configfs, leading to a Denial of Service (DoS) for the affected system.

Red Hat acknowledges the upstream Linux kernel correction for «PCI» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.