{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-89624", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.737Z", "datePublished": "2026-09-11T19:45:21.438Z", "dateUpdated": "2026-10-21T12:48:01.115Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:48:01.115Z" }, "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's behalf. __hid_device_probe()\nreleases the devres group, closes the report and clears hdev->driver:\n\n\tif (ret) {\n\t\tdevres_release_group(&hdev->dev, hdev->devres_group_id);\n\t\thid_close_report(hdev);\n\t\thdev->driver = 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->driver 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() -> hid_hw_open() -> the\ntransport's 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->inputs\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 & ~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 " } ], "metrics": [ { "cvssV3_1": { "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" }, "scenarios": [ { "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’s 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() -> hid_hw_open() writes the mutex/lock inside the freed hid_device and calls ll_driver->open 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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/hid-universal-pidff.c" ], "versions": [ { "version": "c1fde337b317f0a226de92803288741c30799eb0", "lessThan": "66358f5789c9a7e28809985a83c01e6ad933849e", "status": "affected", "versionType": "git" }, { "version": "f45f26a6b3e7260c129c7c6bb0ace63aeb7b3868", "lessThan": "519fa26695b02870022fcdc651efb3d379abe54e", "status": "affected", "versionType": "git" }, { "version": "f06bf8d94fffbb544b1cb5402c92e0a075f0d420", "lessThan": "01d9874e84d3ab78fd212ad822412eb3af84497f", "status": "affected", "versionType": "git" }, { "version": "f06bf8d94fffbb544b1cb5402c92e0a075f0d420", "lessThan": "c457bb516b61edeab940235a011928e26925381e", "status": "affected", "versionType": "git" }, { "version": "f06bf8d94fffbb544b1cb5402c92e0a075f0d420", "lessThan": "ce08c5555cabcd444d8b77fa69a7cb68bb05f611", "status": "affected", "versionType": "git" }, { "version": "af9f2471dfe5a48384f5b7f021a673fbc741465e", "status": "affected", "versionType": "git" }, { "version": "b797352954eee6dc084cfaed0659dea60adfb484", "status": "affected", "versionType": "git" }, { "version": "6.6.88", "lessThan": "6.6.160", "status": "affected", "versionType": "semver" }, { "version": "6.12.24", "lessThan": "6.12.111", "status": "affected", "versionType": "semver" }, { "version": "6.13.12", "lessThan": "6.14", "status": "affected", "versionType": "semver" }, { "version": "6.14.3", "lessThan": "6.15", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/hid-universal-pidff.c" ], "versions": [ { "version": "6.15", "status": "affected" }, { "version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.88", "versionEndExcluding": "6.6.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.24", "versionEndExcluding": "6.12.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "6.18.50" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.2.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/66358f5789c9a7e28809985a83c01e6ad933849e" }, { "url": "https://git.kernel.org/stable/c/519fa26695b02870022fcdc651efb3d379abe54e" }, { "url": "https://git.kernel.org/stable/c/01d9874e84d3ab78fd212ad822412eb3af84497f" }, { "url": "https://git.kernel.org/stable/c/c457bb516b61edeab940235a011928e26925381e" }, { "url": "https://git.kernel.org/stable/c/ce08c5555cabcd444d8b77fa69a7cb68bb05f611" } ], "title": "HID: universal-pidff: stop the device when force-feedback init fails", "x_generator": { "engine": "bippy-1.2.0" } } } }