CVE-2026-89623

In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: stop device IO before hid_hw_stop Quiesce device IO at the start of the devm cleanup callback mcp2221_hid_unregister() so that incoming HID reports cannot race with hardware teardown during probe failure or device removal, addressing a potential use-after-free. Guard the call to hid_device_io_stop() with io_started. On normal removal hid_device_remove() has already cleared io_started before the devres group is released, so an unconditional call would otherwise hit the !io_started path and emit a spurious "io already stopped" warning on every removal. The guard preserves the probe-failure balancing, where io_started is still set after hid_device_io_start(), while staying silent on the normal removal path.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/0ae90a19e6b5a8557d25d95facb7e01c9c07af38
https://git.kernel.org/stable/c/2eda1513f573945c1e3a0090341f3d28740463b1
https://git.kernel.org/stable/c/85d963499f1feeea287c0a37c3eac3fc1898eca9
https://git.kernel.org/stable/c/c99ba6c234d4d537c317336376b78c088174034a
https://git.kernel.org/stable/c/dca151633c0fde90935311c60e7cfc064aa56134

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-14 13:19

NVD link : CVE-2026-89623

Mitre link : CVE-2026-89623

CVE.ORG link : CVE-2026-89623

JSON object : View

Products Affected

No product.

CWE

No CWE.

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