{"id":"CVE-2026-80780","revision":"521195cb1bb747cfbc734800f0e6691f","records":[{"revision":"521195cb1bb747cfbc734800f0e6691f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80780","aliases":[],"title":"HID: pidff: fix OOB write when hid->inputs is empty","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 ","state":0,"publishedAt":"2026-09-04T15:12:52.009+00:00","modifiedAt":"2026-10-19T08:43:35.596+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/hid/usbhid/hid-pidff.c\"\n ],\n \"versions\": [\n {\n \"version\": \"c1fde337b317f0a226de92803288741c30799eb0\",\n \"lessThan\": \"2e0471bf3ab2a6b7eedcc3b8a2a17286b6a9ae1a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f45f26a6b3e7260c129c7c6bb0ace63aeb7b3868\",\n \"lessThan\": \"ad9330f7e74a97842815a291a0d7389ed2f34504\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f06bf8d94fffbb544b1cb5402c92e0a075f0d420\",\n \"lessThan\": \"4529c03c3da8f91392cd630453452f569973f4cd\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f06bf8d94fffbb544b1cb5402c92e0a075f0d420\",\n \"lessThan\": \"d416eeb7d016d82af67c149d884bc6a9323c4ac7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f06bf8d94fffbb544b1cb5402c92e0a075f0d420\",\n \"lessThan\": \"86b63adfa5e132beac4be72668fdf9128fe51d2e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f06bf8d94fffbb544b1cb5402c92e0a075f0d420\",\n \"lessThan\": \"67bb1074e3d2d12fa059a9cc707e89398a4e4704\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"af9f2471dfe5a48384f5b7f021a673fbc741465e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b797352954eee6dc084cfaed0659dea60adfb484\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6.6.88\",\n \"lessThan\": \"6.6.156\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.24\",\n \"lessThan\": \"6.12.108\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.13.12\",\n \"lessThan\": \"6.14\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.14.3\",\n \"lessThan\": \"6.15\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/hid/usbhid/hid-pidff.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.15\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.15\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.156\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.108\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.47\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.11\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.1\",\n \"lessThanOrEqual\": \"7.2.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.3\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/2e0471bf3ab2a6b7eedcc3b8a2a17286b6a9ae1a","https://git.kernel.org/stable/c/ad9330f7e74a97842815a291a0d7389ed2f34504","https://git.kernel.org/stable/c/4529c03c3da8f91392cd630453452f569973f4cd","https://git.kernel.org/stable/c/d416eeb7d016d82af67c149d884bc6a9323c4ac7","https://git.kernel.org/stable/c/86b63adfa5e132beac4be72668fdf9128fe51d2e","https://git.kernel.org/stable/c/67bb1074e3d2d12fa059a9cc707e89398a4e4704"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80780","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80780","identifiers":["CVE-2026-80780"]},"retained":false,"historicalAffected":[]}],"coverage":[]}