CVE-2026-53051

A flaw was found in the Linux kernel. During a specific hardware reset sequence, the system attempts to access hardware registers before the PCI Express controller is fully powered on. This premature access can cause a Control Backbone CBB timeout, leading to system unresponsiveness. This issue c...

CVE-2026-53051

In the Linux kernel, the following vulnerability has been resolved: PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on When PERST is deasserted twice assert - deassert - assert - deassert, a CBB Control Backbone timeout occurs at DBI register offset 0x8bc PCIEMISCCONTROL1OFF...

CVE-2026-53051

The CVE-2026-53051 issue is a Linux kernel PCIe race in the NVIDIA Tegra194 CBB path. When PERST# toggles (assert → deassert → assert → deassert), the code sequence calls pci_epc_deinit_notify() and dw_pcie_ep_cleanup() before the controller core is powered on, causing a CBB timeout at DBI regist...