CVE-2026-46092
kernel: wifi: rtw88: check for PCI upstream bridge existence
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 27, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's rtw88 Wi-Fi driver. When the 8821CE device is installed on a system where it is on a root bus, the driver's probing routine does not properly check for the existence of a PCI upstream bridge. This oversight can lead to a system crash, resulting in a denial of service. This vulnerability occurs during device initialization if the specific PCI topology is present.
CVSS score applicability
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.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference