CVE-2026-89624 - Vulnerability Details

- HID: universal-pidff: stop the device when force-feedback init fails

Description

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

HID: universal-pidff: stop the device when force-feedback init fails

universal_pidff_probe() starts the device with hid_hw_start() and then, if
force-feedback initialisation fails, returns the error through a label that
only does "return error". The device is left started.

The HID core does not unwind on the driver's behalf. __hid_device_probe()
releases the devres group, closes the report and clears hdev->driver:

if (ret) {
devres_release_group(&hdev->dev, hdev->devres_group_id);
hid_close_report(hdev);
hdev->driver = NULL;
}

The hidraw character device that hid_hw_start() registered through
hid_connect() is allocated with kzalloc() and added with cdev_device_add(),
so it is not devres-managed and survives that. With hdev->driver NULL,
hid_device_remove() skips hid_hw_stop() as well, because it only unwinds
while a driver is still attached. The registration therefore outlives the
device on both paths.

Opening the surviving /dev/hidrawX writes into freed memory. KASAN reports
a use-after-free write from hidraw_open() -> hid_hw_open() -> the
transport's open callback, which takes a spinlock inside the freed object.
A descriptor that carries a PID usage page and no input reports is enough:
hidraw claims the device so hid_hw_start() succeeds, while hid->inputs
stays empty so force-feedback init fails. The other failure returns in
hid_pidff_init_with_quirks() - no output reports, an allocation failure,
pidff_init_fields(), pidff_check_autocenter(), an unusable effect count,
input_ff_create() - all reach the same label.

Stop the device on that path. hid-dr.c and hid-emsff.c, which start the
device with the same HID_CONNECT_DEFAULT & ~HID_CONNECT_FF mask, already do
this. The two earlier gotos must keep returning without hid_hw_stop(),
since neither has a started device, so give the path that fails after the
start its own label.

Discovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>

Published: 2026-09-11

Score: 7.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

The Linux kernel HID universal‑pidff driver starts a device with hid_hw_start and, when force‑feedback initialization fails, it leaves the device started while clearing the driver pointer. The /dev/hidraw character device created by hid_connect persists, causing the device to be reachable after the driver has been detached. Opening the file triggers a write into freed memory, resulting in a use‑after‑free that can corrupt kernel memory and may allow an attacker with local access to execute arbitrary code or elevate privileges.

Affected Systems

Any Linux system whose kernel contains the universal‑pidff driver before the fix is applied is affected. Distributions shipping those kernel versions are vulnerable when a no input reports. No other vendors or products are reported to be affected.

Risk and Exploitability

The CVSS score of 6.3 signals a moderate severity. The EPSS score of < 1 exploration, and the vulnerability is not listed in the CISA KEV catalog. Exploitation requires local access to a matching HID device and the ability to open its /dev/hidraw entry; an attacker would trigger the faulty force‑feedback initialization path to cause the use‑after‑free.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`f06bf8d94fffbb544b1cb5402c92e0a075f0d420`	affected	< 01d9874e84d3ab78fd212ad822412eb3af84497f
`f06bf8d94fffbb544b1cb5402c92e0a075f0d420`	affected	< c457bb516b61edeab940235a011928e26925381e
`f06bf8d94fffbb544b1cb5402c92e0a075f0d420`	affected	< ce08c5555cabcd444d8b77fa69a7cb68bb05f611
`c1fde337b317f0a226de92803288741c30799eb0`	affected	—
`f45f26a6b3e7260c129c7c6bb0ace63aeb7b3868`	affected	—
`af9f2471dfe5a48384f5b7f021a673fbc741465e`	affected	—
`b797352954eee6dc084cfaed0659dea60adfb484`	affected	—
`6.6.88`	affected	< 6.7
`6.12.24`	affected	< 6.13
`6.13.12`	affected	< 6.14
`6.14.3`	affected	< 6.15

Linux

affected

Version	Status	Constraints
`6.15`	affected	—
`0`	unaffected	< 6.15
`6.18.50`	unaffected	≤ 6.18.*
`7.2.4`	unaffected	≤ 7.2.*
`7.3-rc1`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[f06bf8d94fffbb544b1cb5402c92e0a075f0d420,01d9874e84d3ab78fd212ad822412eb3af84497f)`	affected	code_commit	—
`[f06bf8d94fffbb544b1cb5402c92e0a075f0d420,c457bb516b61edeab940235a011928e26925381e)`	affected	code_commit	—
`[f06bf8d94fffbb544b1cb5402c92e0a075f0d420,ce08c5555cabcd444d8b77fa69a7cb68bb05f611)`	affected	code_commit	—
`c1fde337b317f0a226de92803288741c30799eb0`	affected	code_commit	—
`f45f26a6b3e7260c129c7c6bb0ace63aeb7b3868`	affected	code_commit	—
`af9f2471dfe5a48384f5b7f021a673fbc741465e`	affected	code_commit	—
`b797352954eee6dc084cfaed0659dea60adfb484`	affected	code_commit	—
`[6.6.88,6.7)`	affected	semver	—
`[6.12.24,6.13)`	affected	semver	—
`[6.13.12,6.14)`	affected	semver	—
`[6.14.3,6.15)`	affected	semver	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`6.15`	affected	semver	—
`[0,6.15)`	unaffected	semver	—
`[6.18.50,6.19.0)`	unaffected	semver	—
`[7.2.4,7.3.0)`	unaffected	semver	—
`[7.3-rc1,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Upgrade the kernel to a version that includes the patch for the universal‑pidff driver 01d9874e84d3ab78fd212ad822412eb3af84497f.
As a temporary workaround, disable or unload the universal‑pidff driver for the affected device, for removing the device from the system.
Restrict access to /dev/hidraw* devices by setting strict file permissions so that only privileged users can open them until a permanent fix is in place.

Generated by OpenCVE AI on September 13, 2026 at 05:30 UTC.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00206.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/01d9874e84d3ab78fd212ad822412eb3af84497f
https://git.kernel.org/stable/c/c457bb516b61edeab940235a011928e26925381e
https://git.kernel.org/stable/c/ce08c5555cabcd444d8b77fa69a7cb68bb05f611
https://nvd.nist.gov/vuln/detail/CVE-2026-89624
https://www.cve.org/CVERecord?id=CVE-2026-89624

History

Sun, 13 Sep 2026 06:45:00 +0000

Type	Values Removed	Values Added
Metrics	cvssV3_1 `{'score': 6.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H'}`	cvssV3_1 `{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}`

Sat, 12 Sep 2026 00:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-825
References		https://nvd.nist.gov/vuln/detail/CVE-2026-89624 https://www.cve.org/CVERecord?id=CVE-2026-89624
Metrics	threat_severity `None`	cvssV3_1 `{'score': 6.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H'}` threat_severity `Moderate`

Fri, 11 Sep 2026 23:45:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: HID: universal-pidff: stop the device when force-feedback init fails universal_pidff_probe() starts the device with hid_hw_start() and then, if force-feedback initialisation fails, returns the error through a label that only does "return error". The device is left started. The HID core does not unwind on the driver's behalf. __hid_device_probe() releases the devres group, closes the report and clears hdev->driver: if (ret) { devres_release_group(&hdev->dev, hdev->devres_group_id); hid_close_report(hdev); hdev->driver = NULL; } The hidraw character device that hid_hw_start() registered through hid_connect() is allocated with kzalloc() and added with cdev_device_add(), so it is not devres-managed and survives that. With hdev->driver NULL, hid_device_remove() skips hid_hw_stop() as well, because it only unwinds while a driver is still attached. The registration therefore outlives the device on both paths. Opening the surviving /dev/hidrawX writes into freed memory. KASAN reports a use-after-free write from hidraw_open() -> hid_hw_open() -> the transport's open callback, which takes a spinlock inside the freed object. A descriptor that carries a PID usage page and no input reports is enough: hidraw claims the device so hid_hw_start() succeeds, while hid->inputs stays empty so force-feedback init fails. The other failure returns in hid_pidff_init_with_quirks() - no output reports, an allocation failure, pidff_init_fields(), pidff_check_autocenter(), an unusable effect count, input_ff_create() - all reach the same label. Stop the device on that path. hid-dr.c and hid-emsff.c, which start the device with the same HID_CONNECT_DEFAULT & ~HID_CONNECT_FF mask, already do this. The two earlier gotos must keep returning without hid_hw_stop(), since neither has a started device, so give the path that fails after the start its own label. Discovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>
Title		HID: universal-pidff: stop the device when force-feedback init fails
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/01d9874e84d3ab78fd212ad822412eb3af84497f https://git.kernel.org/stable/c/c457bb516b61edeab940235a011928e26925381e https://git.kernel.org/stable/c/ce08c5555cabcd444d8b77fa69a7cb68bb05f611

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-09-11T19:45:21.438Z

Updated: 2026-09-13T06:32:04.742Z

Reserved: 2026-09-11T19:38:34.737Z

Link: CVE-2026-89624

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-11T20:19:47.750

Modified: 2026-09-13T07:17:27.800

Link: CVE-2026-89624

Redhat

Severity : Moderate

Publid Date: 2026-09-11T19:45:21Z

Links: CVE-2026-89624 - Bugzilla

OpenCVE Enrichment

Updated: 2026-09-13T05:45:18Z

Weaknesses

CWE-825
Expired Pointer Dereference

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

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