CVE-2026-89624 (GCVE-0-2026-89624)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:45 – Updated: 2026-10-21 12:48
VLAI
Title
HID: universal-pidff: stop the device when force-feedback init fails
Summary
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>
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6637 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c1fde337b317f0a226de92803288741c30799eb0 , < 66358f5789c9a7e28809985a83c01e6ad933849e (git)
Affected: f45f26a6b3e7260c129c7c6bb0ace63aeb7b3868 , < 519fa26695b02870022fcdc651efb3d379abe54e (git)
Affected: f06bf8d94fffbb544b1cb5402c92e0a075f0d420 , < 01d9874e84d3ab78fd212ad822412eb3af84497f (git)
Affected: f06bf8d94fffbb544b1cb5402c92e0a075f0d420 , < c457bb516b61edeab940235a011928e26925381e (git)
Affected: f06bf8d94fffbb544b1cb5402c92e0a075f0d420 , < ce08c5555cabcd444d8b77fa69a7cb68bb05f611 (git)
Affected: af9f2471dfe5a48384f5b7f021a673fbc741465e (git)
Affected: b797352954eee6dc084cfaed0659dea60adfb484 (git)
Affected: 6.6.88 , < 6.6.160 (semver)
Affected: 6.12.24 , < 6.12.111 (semver)
Affected: 6.13.12 , < 6.14 (semver)
Affected: 6.14.3 , < 6.15 (semver)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: universal-pidff: stop the device when force-feedback init fails\n\nuniversal_pidff_probe() starts the device with hid_hw_start() and then, if\nforce-feedback initialisation fails, returns the error through a label that\nonly does \"return error\".  The device is left started.\n\nThe HID core does not unwind on the driver\u0027s behalf.  __hid_device_probe()\nreleases the devres group, closes the report and clears hdev-\u003edriver:\n\n\tif (ret) {\n\t\tdevres_release_group(\u0026hdev-\u003edev, hdev-\u003edevres_group_id);\n\t\thid_close_report(hdev);\n\t\thdev-\u003edriver = NULL;\n\t}\n\nThe hidraw character device that hid_hw_start() registered through\nhid_connect() is allocated with kzalloc() and added with cdev_device_add(),\nso it is not devres-managed and survives that.  With hdev-\u003edriver NULL,\nhid_device_remove() skips hid_hw_stop() as well, because it only unwinds\nwhile a driver is still attached.  The registration therefore outlives the\ndevice on both paths.\n\nOpening the surviving /dev/hidrawX writes into freed memory.  KASAN reports\na use-after-free write from hidraw_open() -\u003e hid_hw_open() -\u003e the\ntransport\u0027s open callback, which takes a spinlock inside the freed object.\nA descriptor that carries a PID usage page and no input reports is enough:\nhidraw claims the device so hid_hw_start() succeeds, while hid-\u003einputs\nstays empty so force-feedback init fails.  The other failure returns in\nhid_pidff_init_with_quirks() - no output reports, an allocation failure,\npidff_init_fields(), pidff_check_autocenter(), an unusable effect count,\ninput_ff_create() - all reach the same label.\n\nStop the device on that path.  hid-dr.c and hid-emsff.c, which start the\ndevice with the same HID_CONNECT_DEFAULT \u0026 ~HID_CONNECT_FF mask, already do\nthis.  The two earlier gotos must keep returning without hid_hw_stop(),\nsince neither has a started device, so give the path that fails after the\nstart its own label.\n\nDiscovered by XBOW, triaged by Baul Lee \u003cbaul.lee@xbow.com\u003e"
        }
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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              "value": "AV:L - A local process reaches the bug via /dev/uhid: uhid_dev_create2 copies bus/vendor/product and the report descriptor from userspace, so a synthetic BUS_USB device matching hid-universal-pidff binds without hardware. A malicious USB PID gadget is only a lower-severity physical alternative.\nAC:L - The attacker supplies a PID-page descriptor with no input reports so hid_hw_start() registers hidraw while hid_pidff_init_with_quirks() fails, then destroys the uhid device and opens the leftover hidraw node. Both sides of that lifecycle are attacker-controlled; no race or uninfluenced condition is required.\nPR:L - uhid_dev_create2() and hidraw_open() have no capable() gate; reachability is only DAC on /dev/uhid and /dev/hidraw*, which udev uaccess-tags for the logged-in seat user on desktop and Android-class systems. Real init-namespace root is not required.\nUI:N - The attacker\u2019s own process creates the uhid device, tears it down after the failed probe, and opens the surviving /dev/hidrawX. No separate victim action such as mounting a filesystem or plugging in a device is required.\nS:U - The use-after-free is of the host kernel hid_device, hidraw state, and transport private object under a single kernel security authority. It is not a VM escape, IOMMU/DMA bypass, or sandbox boundary crossing.\nC:H - Opening the leftover hidraw node is a slab use-after-free of the freed hid_device and ll_driver private data. Per UAF scoring guidance, control over the reallocated object yields an arbitrary kernel read primitive.\nI:H - hidraw_open() -\u003e hid_hw_open() writes the mutex/lock inside the freed hid_device and calls ll_driver-\u003eopen from freed memory, which is a write plus an indirect call. That is an arbitrary-write/control-flow hijack primitive.\nA:H - The same UAF produces KASAN use-after-free reports and a kernel oops/panic on hidraw open after teardown, and the create/destroy/open cycle can be repeated at will."
            }
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        "dateUpdated": "2026-10-21T12:48:01.115Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/519fa26695b02870022fcdc651efb3d379abe54e"
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        },
        {
          "url": "https://git.kernel.org/stable/c/ce08c5555cabcd444d8b77fa69a7cb68bb05f611"
        }
      ],
      "title": "HID: universal-pidff: stop the device when force-feedback init fails",
      "x_generator": {
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    "cveId": "CVE-2026-89624",
    "datePublished": "2026-09-11T19:45:21.438Z",
    "dateReserved": "2026-09-11T19:38:34.737Z",
    "dateUpdated": "2026-10-21T12:48:01.115Z",
    "state": "PUBLISHED"
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        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: universal-pidff: stop the device when force-feedback init fails\n\nuniversal_pidff_probe() starts the device with hid_hw_start() and then, if\nforce-feedback initialisation fails, returns the error through a label that\nonly does \"return error\".  The device is left started.\n\nThe HID core does not unwind on the driver\u0027s behalf.  __hid_device_probe()\nreleases the devres group, closes the report and clears hdev-\u003edriver:\n\n\tif (ret) {\n\t\tdevres_release_group(\u0026hdev-\u003edev, hdev-\u003edevres_group_id);\n\t\thid_close_report(hdev);\n\t\thdev-\u003edriver = NULL;\n\t}\n\nThe hidraw character device that hid_hw_start() registered through\nhid_connect() is allocated with kzalloc() and added with cdev_device_add(),\nso it is not devres-managed and survives that.  With hdev-\u003edriver NULL,\nhid_device_remove() skips hid_hw_stop() as well, because it only unwinds\nwhile a driver is still attached.  The registration therefore outlives the\ndevice on both paths.\n\nOpening the surviving /dev/hidrawX writes into freed memory.  KASAN reports\na use-after-free write from hidraw_open() -\u003e hid_hw_open() -\u003e the\ntransport\u0027s open callback, which takes a spinlock inside the freed object.\nA descriptor that carries a PID usage page and no input reports is enough:\nhidraw claims the device so hid_hw_start() succeeds, while hid-\u003einputs\nstays empty so force-feedback init fails.  The other failure returns in\nhid_pidff_init_with_quirks() - no output reports, an allocation failure,\npidff_init_fields(), pidff_check_autocenter(), an unusable effect count,\ninput_ff_create() - all reach the same label.\n\nStop the device on that path.  hid-dr.c and hid-emsff.c, which start the\ndevice with the same HID_CONNECT_DEFAULT \u0026 ~HID_CONNECT_FF mask, already do\nthis.  The two earlier gotos must keep returning without hid_hw_stop(),\nsince neither has a started device, so give the path that fails after the\nstart its own label.\n\nDiscovered by XBOW, triaged by Baul Lee \u003cbaul.lee@xbow.com\u003e"
          }
        ],
        "id": "CVE-2026-89624",
        "lastModified": "2026-10-21T13:20:09.927",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-11T20:19:47.750",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/01d9874e84d3ab78fd212ad822412eb3af84497f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/519fa26695b02870022fcdc651efb3d379abe54e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/66358f5789c9a7e28809985a83c01e6ad933849e"
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          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c457bb516b61edeab940235a011928e26925381e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ce08c5555cabcd444d8b77fa69a7cb68bb05f611"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-29T14:50:48+00:00",
      "cve": "CVE-2026-89624",
      "id": "CVE-2026-89624",
      "initial_release_date": "2026-09-11T00:00:00+00:00",
      "product_status:known_not_affected": "276",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: HID: universal-pidff: stop the device when force-feedback init fails",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89624.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-20T01:06:16Z",
      "cve": "CVE-2026-89624",
      "id": "CVE-2026-89624",
      "initial_release_date": "2026-09-16T00:01:27Z",
      "product_status:known_affected": "17",
      "product_status:known_not_affected": "337",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-89624",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-89624.json",
      "version": "4"
    }
  }
}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.