CVE-2026-46092

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> wifi: rtw88: check for PCI upstream bridge existence<br /> <br /> pci_upstream_bridge() returns NULL if the device is on a root bus. If<br /> 8821CE is installed in the system with such a PCI topology, the probing<br /> routine will crash. This has probably been unnoticed as 8821CE is mostly<br /> supplied in laptops where there is a PCI-to-PCI bridge located upstream<br /> from the device. However the card might be installed on a system with<br /> different configuration.<br /> <br /> Check if the bridge does exist for the specific workaround to be applied.<br /> <br /> Found by Linux Verification Center (linuxtesting.org) with Svace static<br /> analysis tool.