{"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":"2026-09-21T13:14:36.086Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-21T13:14:36.086Z"},"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 <baul.lee@xbow.com>"}],"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":"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":"c1fde337b317f0a226de92803288741c30799eb0","status":"affected","versionType":"git"},{"version":"af9f2471dfe5a48384f5b7f021a673fbc741465e","status":"affected","versionType":"git"},{"version":"b797352954eee6dc084cfaed0659dea60adfb484","status":"affected","versionType":"git"},{"version":"6.12.24","lessThan":"6.12.111","status":"affected","versionType":"semver"},{"version":"6.6.88","lessThan":"6.7","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":"6.12.111","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-rc1","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":"6.12.24","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-rc1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.88"},{"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/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"}}}}