Vulnerability-Lookup

GHSA-JMFJ-P2W9-43G4

Vulnerability from github – Published: 2026-08-10 12:31 – Updated: 2026-08-14 00:31

Details

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.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-68091"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T12:17:21Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: stop hardware after post-start probe failures\n\nwacom_parse_and_register() starts HID hardware before registering inputs\nand initializing pad LEDs/remotes. Those later steps can fail, but their\nerror paths currently release Wacom resources without stopping the HID\nhardware.\n\nRoute post-hid_hw_start() failures through hid_hw_stop() before\nreleasing driver resources.\n\nThis issue was identified during our ongoing static-analysis research while\nreviewing kernel code.",
  "id": "GHSA-jmfj-p2w9-43g4",
  "modified": "2026-08-14T00:31:51Z",
  "published": "2026-08-10T12:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68091"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a1ebdcb56ae58a0ee2c54dd15d75121e30424e3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e6473a4f0596182acdda5219b4bebfbee76514f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/416095e9a6037b4b39fcadd0d2bd77a8852211ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46d8b8c85ae0589fb85746a64e8908160e52aac3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a7ca028facf04921b2c1c2e4d1ee7f282510555"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75eb2173b63ab41c24d80cd641af18f3c117a267"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2cc711a9df37f359159b21db56cea9c21f58a9c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec2612b8ad9e642596db011dd8b6568ef1edeaa1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-68091 (GCVE-0-2026-68091)

Vulnerability from cvelistv5 – Published: 2026-08-10 11:51 – Updated: 2026-08-17 04:58

Title

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

Summary

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.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/5a7ca028facf04921…
https://git.kernel.org/stable/c/3e6473a4f0596182a…
https://git.kernel.org/stable/c/46d8b8c85ae0589fb…
https://git.kernel.org/stable/c/1a1ebdcb56ae58a0e…
https://git.kernel.org/stable/c/75eb2173b63ab41c2…
https://git.kernel.org/stable/c/416095e9a6037b4b3…
https://git.kernel.org/stable/c/e2cc711a9df37f359…
https://git.kernel.org/stable/c/ec2612b8ad9e64259…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f304eb483393f135ab479d02da6f5dc7d9b51cd6 , < 5a7ca028facf04921b2c1c2e4d1ee7f282510555 (git) Affected: 853307924a9003b3142b5253b1caa6625fbad9fc , < 3e6473a4f0596182acdda5219b4bebfbee76514f (git) Affected: e5c6c8ef3e4d3a88407404daafbf2c6be62f2185 , < 46d8b8c85ae0589fb85746a64e8908160e52aac3 (git) Affected: fc41101a94b11cd0d5ad8e213b2b6965f248d653 , < 1a1ebdcb56ae58a0ee2c54dd15d75121e30424e3 (git) Affected: c1d6708bf0d3dd976460d435373cf5abf21ce258 , < 75eb2173b63ab41c24d80cd641af18f3c117a267 (git) Affected: c1d6708bf0d3dd976460d435373cf5abf21ce258 , < 416095e9a6037b4b39fcadd0d2bd77a8852211ec (git) Affected: c1d6708bf0d3dd976460d435373cf5abf21ce258 , < e2cc711a9df37f359159b21db56cea9c21f58a9c (git) Affected: c1d6708bf0d3dd976460d435373cf5abf21ce258 , < ec2612b8ad9e642596db011dd8b6568ef1edeaa1 (git) Affected: d943536197c1a05e377452af4ec7942e11d018f4 (git) Affected: dbaca8fa9ec2c5aa55ec515686ce3b9007554eab (git) Affected: 79187e8099a9feb550916dbfb962497522022b6d (git) Affected: 5.10.210 , < 5.10.261 (semver) Affected: 5.15.149 , < 5.15.212 (semver) Affected: 6.1.79 , < 6.1.178 (semver) Affected: 6.6.18 , < 6.6.145 (semver) Affected: 4.19.307 , < 4.20 (semver) Affected: 5.4.269 , < 5.5 (semver) Affected: 6.7.6 , < 6.8 (semver)
Linux	Linux	Affected: 6.8 Unaffected: 0 , < 6.8 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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JSON

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              "lessThanOrEqual": "6.12.*",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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              "value": "AV:A - The flaw is in the Wacom HID driver probe path reached when a Wacom-class HID device is connected; Bluetooth Wacom tablets are widely deployed and let an adjacent attacker deliver crafted HID traffic without USB port access.\nAC:L - A malicious or fuzzed Wacom HID device can steer probe through post-hid_hw_start() failure paths and the scheduled init_work, reliably leaving HID hardware active after driver teardown.\nPR:N - Exploitation requires only presenting a rogue Wacom HID device over Bluetooth or USB; no prior local account, capability, or namespace privilege on the victim host is needed.\nUI:N - No victim interaction is required beyond the attacker initiating device connection; probe failure and continued HID activity occur automatically on the kernel hotplug path.\nS:U - Impact is kernel memory corruption and privilege escalation within the host kernel, not crossing a VM, container, or IOMMU security boundary.\nC:H - Continued HID callbacks and delayed work after wacom_release_resources() create a use-after-free on freed driver allocations, enabling arbitrary kernel memory disclosure.\nI:H - The dangling hardware/workqueue activity against freed Wacom state is a heap use-after-free that can be leveraged for arbitrary kernel writes and code execution.\nA:H - Accessing freed probe resources from still-running HID hardware or init_work can cause kernel oops, panic, or hang, producing complete system denial of service."
            }
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        "dateUpdated": "2026-08-17T04:58:39.275Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/ec2612b8ad9e642596db011dd8b6568ef1edeaa1"
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      "title": "HID: wacom: stop hardware after post-start probe failures",
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    "datePublished": "2026-08-10T11:51:46.683Z",
    "dateReserved": "2026-07-30T09:28:09.367Z",
    "dateUpdated": "2026-08-17T04:58:39.275Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-JMFJ-P2W9-43G4

CVE-2026-68091 (GCVE-0-2026-68091)

Tags

Sightings

Nomenclature

Related by attack behaviour