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

Vulnerability from cvelistv5 – Published: 2026-09-11 19:45 – Updated: 2026-09-13 06:32
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
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f06bf8d94fffbb544b1cb5402c92e0a075f0d420 , < 01d9874e84d3ab78fd212ad822412eb3af84497f (git)
Affected: f06bf8d94fffbb544b1cb5402c92e0a075f0d420 , < c457bb516b61edeab940235a011928e26925381e (git)
Affected: f06bf8d94fffbb544b1cb5402c92e0a075f0d420 , < ce08c5555cabcd444d8b77fa69a7cb68bb05f611 (git)
Affected: c1fde337b317f0a226de92803288741c30799eb0 (git)
Affected: f45f26a6b3e7260c129c7c6bb0ace63aeb7b3868 (git)
Affected: af9f2471dfe5a48384f5b7f021a673fbc741465e (git)
Affected: b797352954eee6dc084cfaed0659dea60adfb484 (git)
Affected: 6.6.88 , < 6.7 (semver)
Affected: 6.12.24 , < 6.13 (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: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "descriptions": [
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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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              "lang": "en",
              "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": "2026-09-13T06:32:04.742Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/ce08c5555cabcd444d8b77fa69a7cb68bb05f611"
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      "title": "HID: universal-pidff: stop the device when force-feedback init fails",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89624",
    "datePublished": "2026-09-11T19:45:21.438Z",
    "dateReserved": "2026-09-11T19:38:34.737Z",
    "dateUpdated": "2026-09-13T06:32:04.742Z",
    "state": "PUBLISHED"
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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\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/hid/hid-universal-pidff.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f06bf8d94fffbb544b1cb5402c92e0a075f0d420\",\"lessThan\":\"01d9874e84d3ab78fd212ad822412eb3af84497f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f06bf8d94fffbb544b1cb5402c92e0a075f0d420\",\"lessThan\":\"c457bb516b61edeab940235a011928e26925381e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f06bf8d94fffbb544b1cb5402c92e0a075f0d420\",\"lessThan\":\"ce08c5555cabcd444d8b77fa69a7cb68bb05f611\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c1fde337b317f0a226de92803288741c30799eb0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f45f26a6b3e7260c129c7c6bb0ace63aeb7b3868\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"af9f2471dfe5a48384f5b7f021a673fbc741465e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b797352954eee6dc084cfaed0659dea60adfb484\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6.6.88\",\"lessThan\":\"6.7\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.12.24\",\"lessThan\":\"6.13\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.13.12\",\"lessThan\":\"6.14\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.14.3\",\"lessThan\":\"6.15\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/hid/hid-universal-pidff.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.50\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.4\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/01d9874e84d3ab78fd212ad822412eb3af84497f\",\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-14T15:20:48+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": "2026-09-16T00:01:27Z",
      "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": "336",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-89624",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-89624.json",
      "version": "2"
    }
  }
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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