CVE-2026-97430: xhci: Prevent queuing new commands if xhci is inaccessible
In the Linux kernel, the following vulnerability has been resolved:
xhci: Prevent queuing new commands if xhci is inaccessible
Refuse to queue a new command on the command ring if xHC is marked inaccessible with the HCDFLAGHWACCESSIBLE.
HCDFLAGHWACCESSIBLE is set and cleared in suspend and resume.
Also print a warning if xhci is being suspended with commands still pending on the command ring.
Affected Software
Event History
Frequently Asked Questions
When can this issue be triggered?
The affected condition involves attempts to queue new xHCI commands while the controller is marked inaccessible during suspend or resume handling. The fix also warns when suspension begins with commands still pending on the command ring.
What mitigation is available if an updated kernel cannot be deployed immediately?
No workaround or configuration-based mitigation is provided in the available information. Administrators should review suspend and resume behavior involving xHCI controllers and apply a kernel version containing the referenced fixes when possible.