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medium5.5

CVE-2026-46009

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown epf_ntb_epc_destroy() duplic…

Impact

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown epf_ntb_epc_destroy() duplicates the teardown that the caller is supposed to do later. This leads to an oops when .allow_link fails or when .drop_link is performed. Remove the helper. Also drop pci_epc_put(). EPC device refcounting is tied to configfs EPC group lifetime, and pci_epc_put() in the .drop_link path is sufficient.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.12 before 5.15.209
from 5.16 before 6.1.175
from 6.2 before 6.6.140
from 6.7 before 6.12.86
from 6.13 before 6.18.27
from 6.19 before 7.0.4

References