CVE-2026-68091 - Vulnerability Details

- HID: wacom: stop hardware after post-start probe failures

Description

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

HID: wacom: stop hardware after post-start probe failures

wacom_parse_and_register() starts HID hardware before registering inputs
and initializing pad LEDs/remotes. Those later steps can fail, but their
error paths currently release Wacom resources without stopping the HID
hardware.

Route post-hid_hw_start() failures through hid_hw_stop() before
releasing driver resources.

This issue was identified during our ongoing static-analysis research while
reviewing kernel code.

Published: 2026-08-10

Score: 8.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

The Linux kernel’s Wacom HID driver starts the hardware before completing all initialization steps. If a “post‑start” probe fails—such as during LED or remote initialization—the driver’s error paths release resources but fail to stop the hardware. The result is that the device remains powered on while its driver objects are freed, potentially exhausting system resources or leaving the device in an unusable state. This flaw can ultimately cause a denial‑of‑service condition for the affected device and degrade overall system stability.

Affected Systems

All Linux kernel releases that include the Wacom HID driver and do not yet incorporate the commit fixing this issue are vulnerable. The fix is referenced in several kernel commit logs available through the provided URLs. Any distribution running a kernel prior to the commit that stops the hardware on a probe failure is affected, regardless of vendor.

Risk and Exploitability

The CVSS score of 8.8 indicates high severity. The EPSS score of < 1% implies a low probability of exploitation. The flaw manifests when a post‑start probe fails; the driver releases resources but fails to stop the hardware, leaving the device powered on in an unusable state. The likely attack path is local: any user or process capable of connecting a Wacom device that triggers such a failure can trigger the flaw. No remote exploitation path is evident from the description, and the vulnerability is not listed in the CISA KEV catalog.

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
`f304eb483393f135ab479d02da6f5dc7d9b51cd6`	affected	< 5a7ca028facf04921b2c1c2e4d1ee7f282510555
`853307924a9003b3142b5253b1caa6625fbad9fc`	affected	< 3e6473a4f0596182acdda5219b4bebfbee76514f
`e5c6c8ef3e4d3a88407404daafbf2c6be62f2185`	affected	< 46d8b8c85ae0589fb85746a64e8908160e52aac3
`fc41101a94b11cd0d5ad8e213b2b6965f248d653`	affected	< 1a1ebdcb56ae58a0ee2c54dd15d75121e30424e3
`c1d6708bf0d3dd976460d435373cf5abf21ce258`	affected	< 75eb2173b63ab41c24d80cd641af18f3c117a267
`c1d6708bf0d3dd976460d435373cf5abf21ce258`	affected	< 416095e9a6037b4b39fcadd0d2bd77a8852211ec
`c1d6708bf0d3dd976460d435373cf5abf21ce258`	affected	< e2cc711a9df37f359159b21db56cea9c21f58a9c
`c1d6708bf0d3dd976460d435373cf5abf21ce258`	affected	< ec2612b8ad9e642596db011dd8b6568ef1edeaa1
`d943536197c1a05e377452af4ec7942e11d018f4`	affected	—
`dbaca8fa9ec2c5aa55ec515686ce3b9007554eab`	affected	—
`79187e8099a9feb550916dbfb962497522022b6d`	affected	—
`5.10.210`	affected	< 5.10.261
`5.15.149`	affected	< 5.15.212
`6.1.79`	affected	< 6.1.178
`6.6.18`	affected	< 6.6.145
`4.19.307`	affected	< 4.20
`5.4.269`	affected	< 5.5
`6.7.6`	affected	< 6.8

Linux

affected

Version	Status	Constraints
`6.8`	affected	—
`0`	unaffected	< 6.8
`5.10.261`	unaffected	≤ 5.10.*
`5.15.212`	unaffected	≤ 5.15.*
`6.1.178`	unaffected	≤ 6.1.*
`6.6.145`	unaffected	≤ 6.6.*
`6.12.96`	unaffected	≤ 6.12.*
`6.18.39`	unaffected	≤ 6.18.*
`7.1.4`	unaffected	≤ 7.1.*
`7.2`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[f304eb483393f135ab479d02da6f5dc7d9b51cd6,5a7ca028facf04921b2c1c2e4d1ee7f282510555)`	affected	code_commit	—
`[853307924a9003b3142b5253b1caa6625fbad9fc,3e6473a4f0596182acdda5219b4bebfbee76514f)`	affected	code_commit	—
`[e5c6c8ef3e4d3a88407404daafbf2c6be62f2185,46d8b8c85ae0589fb85746a64e8908160e52aac3)`	affected	code_commit	—
`[fc41101a94b11cd0d5ad8e213b2b6965f248d653,1a1ebdcb56ae58a0ee2c54dd15d75121e30424e3)`	affected	code_commit	—
`[c1d6708bf0d3dd976460d435373cf5abf21ce258,75eb2173b63ab41c24d80cd641af18f3c117a267)`	affected	code_commit	—
`[c1d6708bf0d3dd976460d435373cf5abf21ce258,416095e9a6037b4b39fcadd0d2bd77a8852211ec)`	affected	code_commit	—
`[c1d6708bf0d3dd976460d435373cf5abf21ce258,e2cc711a9df37f359159b21db56cea9c21f58a9c)`	affected	code_commit	—
`[c1d6708bf0d3dd976460d435373cf5abf21ce258,ec2612b8ad9e642596db011dd8b6568ef1edeaa1)`	affected	code_commit	—
`d943536197c1a05e377452af4ec7942e11d018f4`	affected	code_commit	—
`dbaca8fa9ec2c5aa55ec515686ce3b9007554eab`	affected	code_commit	—
`79187e8099a9feb550916dbfb962497522022b6d`	affected	code_commit	—
`[5.10.210,5.10.261)`	affected	semver	—
`[5.15.149,5.15.212)`	affected	semver	—
`[6.1.79,6.1.178)`	affected	semver	—
`[6.6.18,6.6.145)`	affected	semver	—
`[4.19.307,4.20)`	affected	semver	—
`[5.4.269,5.5)`	affected	semver	—
`[6.7.6,6.8)`	affected	semver	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`6.8`	affected	semver	—
`[0,6.8)`	unaffected	generic	—
`[5.10.261,5.11.0)`	unaffected	semver	—
`[5.15.212,5.16.0)`	unaffected	semver	—
`[6.1.178,6.2.0)`	unaffected	semver	—
`[6.6.145,6.7.0)`	unaffected	semver	—
`[6.12.96,6.13.0)`	unaffected	semver	—
`[6.18.39,6.19.0)`	unaffected	semver	—
`[7.1.4,7.2.0)`	unaffected	semver	—
`[0,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Deploy a Linux kernel that includes the patch that routes post‑start failures through hid_hw_stop() before releasing driver resources.
Blacklist the Wacom driver by adding the line "blacklist wacom" to /etc/modprobe.d/blacklist.conf or by removing the module with "modprobe -r wacom" to prevent it from loading.
Limit exposure by removing physical Wacom devices from untrusted machines and ensuring that only authorized users can attach such devices.

Generated by OpenCVE AI on August 13, 2026 at 23:22 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

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 0.00262.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/1a1ebdcb56ae58a0ee2c54dd15d75121e30424e3
https://git.kernel.org/stable/c/3e6473a4f0596182acdda5219b4bebfbee76514f
https://git.kernel.org/stable/c/416095e9a6037b4b39fcadd0d2bd77a8852211ec
https://git.kernel.org/stable/c/46d8b8c85ae0589fb85746a64e8908160e52aac3
https://git.kernel.org/stable/c/5a7ca028facf04921b2c1c2e4d1ee7f282510555
https://git.kernel.org/stable/c/75eb2173b63ab41c24d80cd641af18f3c117a267
https://git.kernel.org/stable/c/e2cc711a9df37f359159b21db56cea9c21f58a9c
https://git.kernel.org/stable/c/ec2612b8ad9e642596db011dd8b6568ef1edeaa1
https://lore.kernel.org/linux-cve-announce/2026081000-CVE-2026-68091-6146@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-68091
https://www.cve.org/CVERecord?id=CVE-2026-68091

History

Thu, 13 Aug 2026 22:45:00 +0000

Type	Values Removed	Values Added
Metrics	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}`	cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}`

Wed, 12 Aug 2026 00:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-459
References		https://lore.kernel.org/linux-cve-announce/2026081000-CVE-2026-68091-6146@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2026-68091 https://www.cve.org/CVERecord?id=CVE-2026-68091
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Mon, 10 Aug 2026 12:00:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: HID: wacom: stop hardware after post-start probe failures wacom_parse_and_register() starts HID hardware before registering inputs and initializing pad LEDs/remotes. Those later steps can fail, but their error paths currently release Wacom resources without stopping the HID hardware. Route post-hid_hw_start() failures through hid_hw_stop() before releasing driver resources. This issue was identified during our ongoing static-analysis research while reviewing kernel code.
Title		HID: wacom: stop hardware after post-start probe failures
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/1a1ebdcb56ae58a0ee2c54dd15d75121e30424e3 https://git.kernel.org/stable/c/3e6473a4f0596182acdda5219b4bebfbee76514f https://git.kernel.org/stable/c/416095e9a6037b4b39fcadd0d2bd77a8852211ec https://git.kernel.org/stable/c/46d8b8c85ae0589fb85746a64e8908160e52aac3 https://git.kernel.org/stable/c/5a7ca028facf04921b2c1c2e4d1ee7f282510555 https://git.kernel.org/stable/c/75eb2173b63ab41c24d80cd641af18f3c117a267 https://git.kernel.org/stable/c/e2cc711a9df37f359159b21db56cea9c21f58a9c https://git.kernel.org/stable/c/ec2612b8ad9e642596db011dd8b6568ef1edeaa1

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-08-10T11:51:46.683Z

Updated: 2026-08-17T04:58:39.275Z

Reserved: 2026-07-30T09:28:09.367Z

Link: CVE-2026-68091

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-08-10T12:17:21.870

Modified: 2026-08-17T05:18:08.303

Link: CVE-2026-68091

Redhat

Severity : Moderate

Publid Date: 2026-08-10T00:00:00Z

Links: CVE-2026-68091 - Bugzilla

OpenCVE Enrichment

Updated: 2026-08-13T23:30:03Z

Weaknesses

CWE-459
Incomplete Cleanup

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Subscriptions

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