CVE-2026-53051

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A CBB (Control Backbone) timeout occurs in the tegra194 PCI implementation when PERST# is deasserted twice. This issue arises because the functions pci epc deinit notify() and dw pcie ep cleanup() are executed before reset control deassert() powers on the controller core. Specifically, the function dw pcie dbi ro wr en() attempts to access the DBI register at offset 0x8bc (PCIE MISC CONTROL 1 OFF) while the hardware is not yet operational, leading to the timeout.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.