CVE-2026-80773: HID: huawei: fix missing hid_is_usb() check
In the Linux kernel, the following vulnerability has been resolved:
HID: huawei: fix missing hidisusb() check
tousbinterface() can only be used on a hiddevice whose parent is really USB; uhid can create devices that identify as being on BUSUSB, but don't actually have a USB parent. Fix the use of tousbinterface() without a hidisusb() check.
I have verified that it is currently possible to trigger a kernel splat due to this bug in an ASAN build, and that this commit fixes the issue.
Affected Software
Event History
Frequently Asked Questions
Is a physical USB device required to trigger this issue?
No. A UHID-created device can report BUS_USB while lacking an actual USB parent, which is the condition that leads to the unsafe USB-interface conversion.
What impact has been confirmed?
The issue has been verified to cause a kernel splat in an ASAN build. The provided information does not describe impacts beyond that observed failure.
How can I identify a kernel update containing the fix?
The listed stable-kernel references point to commits 66805454c01ffefc40d08a962d606cdb73644c5d, 9acc2463991cdb0856fdbd63fd7178102c1ed73d, and 4cdb6b4b34d7823254f6e1b22faf56c96ac57fb9. Verify that the applicable kernel source or vendor update includes the corresponding change.