CVE-2026-97968

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

hwmon: (corsair-cpro) Create debugfs entries after hwmon registration

ccp_debugfs_init() registers debugfs files whose private data is the devm

allocated ccp. It runs before hwmon_device_register_with_info(), so when

that registration fails, ccp_probe() returns with the files still in

place. The HID core then frees ccp, and ccp_remove() is not called for a

failed probe, so nothing removes them later either. Reading one of the

files dereferences the freed pointer.

Create the debugfs entries only after the hwmon device has been

registered, so no failing path can leave them behind.

The two version queries stay where they are. They send USB commands

without holding ccp->mutex, which is only safe as long as nothing else

can call send_usb_cmd(); once the hwmon device is registered its

callbacks can do so concurrently. Only the debugfs creation moves, and

it is told which queries succeeded.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References