{"id":"CVE-2026-80780","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-80780","generatedAt":"2026-10-28T11:27:55.468Z","title":"In the Linux kernel, the following vulnerability has been resolved: HID: pidff: fix OOB write when hid->inputs is empty hid_pidff_init_with_quirks() derives its input_dev from list_entry(hid->inputs.next, struct hid_input, list) without first checking…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: pidff: fix OOB write when hid->inputs is empty\n\nhid_pidff_init_with_quirks() derives its input_dev from\n\n\tlist_entry(hid->inputs.next, struct hid_input, list)\n\nwithout first checking that hid->inputs is non-empty.  The list member\nof struct hid_input is at offset 0, so on an empty list list_entry()\nyields &hid->inputs itself and the following hidinput->input load reads\nan unrelated member of struct hid_device.  dev is then a type-confused\npointer, and force-feedback init writes through it: each\nset_bit(FF_*, dev->ffbit) stores 8 bytes at dev + 192, past the end of\nthe object dev actually aliases, and input_ff_create() adds further\nwrites of a heap pointer and two function pointers.\n\nUntil hid-universal-pidff the only caller was hid_pidff_init() from\nusbhid, which runs under HID_CLAIMED_INPUT and therefore always has at\nleast one hid_input.  universal_pidff_probe() starts the device with\nHID_CONNECT_DEFAULT & ~HID_CONNECT_FF and then calls\nhid_pidff_init_with_quirks() directly whenever the descriptor carries a\nPID usage page, bypassing that gate.  A report descriptor whose only\napplication collection is on HID_UP_PID leaves hid->inputs empty while\nhid_connect() still succeeds through the hidraw claim, so probe reaches\nthe unguarded list_entry().\n\nThe write happens in the USB probe path, on the hotplug workqueue, so\nplugging in a malicious device is enough to trigger it; no attacker\nsoftware and no logged-in user are required.  KASAN reports an 8-byte\nout-of-bounds write in hid_pidff_init_with_quirks() reached from\nuniversal_pidff_probe().\n\nCheck for an empty list before deriving dev and return -ENODEV, as the\nother HID force-feedback drivers already do.  universal_pidff_probe()\npropagates the error and unwinds.\n\nDiscovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>","published":"2026-09-04T16:18:04.000Z","lastModified":"2026-10-19T09:17:12.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00181,"percentile":0.0762,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/2e0471bf3ab2a6b7eedcc3b8a2a17286b6a9ae1a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4529c03c3da8f91392cd630453452f569973f4cd","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/67bb1074e3d2d12fa059a9cc707e89398a4e4704","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/86b63adfa5e132beac4be72668fdf9128fe51d2e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ad9330f7e74a97842815a291a0d7389ed2f34504","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d416eeb7d016d82af67c149d884bc6a9323c4ac7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80780","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}