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vuln-cve/data/2026/98xxx/CVE-2026-98501.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-98501",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-25T10:25:14.353Z",
"datePublished": "2026-10-18T15:16:46.205Z",
"dateUpdated": "2026-10-24T14:09:09.356Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-24T14:09:09.356Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: alps: fix use-after-free on input2 registration failure\n\nalps_input_configured() stores data->input2 before calling\ninput_register_device(). If registration fails, input_free_device()\nfrees the input device but data->input2 still points to the freed memory.\nalps_input_configured() calls hid_hw_open() before allocating input2, so\nURBs are already active and raw_event can fire during the failure window.\nA U1_SP_ABSOLUTE_REPORT_ID report arriving then causes u1_raw_event()\nto dereference the freed data->input2 -> use-after-free.\n\nFix by only storing input2 into drvdata after successful registration\nand adding a NULL guard in the raw_event path."
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"baseScore": 7.1,
"baseSeverity": "HIGH"
},
"scenarios": [
{
"lang": "en",
"value": "AV:A - `alps_id` uses `HID_BUS_ANY`, so a Bluetooth HIDP peer can bind `hid-alps`; its L2CAP ID-6 report follows `hidp_process_report()->hid_input_report()->alps_raw_event()->u1_raw_event()`, which dereferences the pointer left stale by `alps_input_configured()`.\nAC:H - The peer controls stick support and ID-6 report timing, and asynchronous `hidp_session_dev_work()` permits concurrency, but it cannot force `input_register_device(input2)` to fail; that requires a host-side allocation, device-model, or lock-interruption failure.\nPR:N - After the HIDP session is established, `hidp_session_run()` passes peer-supplied interrupt-channel reports to `hid_input_report()` without any per-report host privilege check; the nearby peer needs no kernel credential.\nUI:R - The victim must pair or connect the attacker's spoofed ALPS Bluetooth HID peer so BlueZ establishes the HIDP session and `hid-alps` probes it; subsequent triggering reports need no further action.\nS:U - The stale `data->input2` and the memory corrupted through it are host-kernel input-core objects; `u1_raw_event()` crosses no VM, IOMMU, or other security-authority boundary.\nC:H - The freed `struct input_dev` contains `vals`, `grab`, and handler-list pointers; after heap reuse, ID-6 reports drive `input_event()` and `input_pass_values()` through attacker-influenced reclaimed fields, permitting arbitrary kernel-memory disclosure.\nI:H - `input_event_dispose()` writes attacker-selected relative and button values through the reclaimed `input_dev->vals` pointer, while `input_pass_values()` follows reclaimed handler pointers, supporting arbitrary writes and control-flow hijacking.\nA:H - `u1_raw_event()` passes the freed pointer to `input_event()`, which reads `evbit`, takes `event_lock`, and accesses `vals` and handler lists; invalid reclaimed state can immediately cause an oops, panic, or lockup."
}
]
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/hid/hid-alps.c"
],
"versions": [
{
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
"lessThan": "64f824dccfd316fd3db8ea1cc4e8a76ad6a02740",
"status": "affected",
"versionType": "git"
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"lessThan": "2e55d76e6e8a756f6d87c241de975599f82b02fa",
"status": "affected",
"versionType": "git"
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"lessThan": "ef8ca5bb4c8b9696f38b1bebce1c851baa02b77b",
"status": "affected",
"versionType": "git"
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{
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"status": "affected",
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"lessThan": "443f6b93442b10b972a16f57ceaaea75b77892b6",
"status": "affected",
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{
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
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"status": "affected",
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{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/hid/hid-alps.c"
],
"versions": [
{
"version": "4.8",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.8",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.271",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.222",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.189",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.158",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.112",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.55",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2.9",
"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": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.8",
"versionEndExcluding": "5.10.271"
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],
"references": [
{
"url": "https://git.kernel.org/stable/c/64f824dccfd316fd3db8ea1cc4e8a76ad6a02740"
},
{
"url": "https://git.kernel.org/stable/c/2e55d76e6e8a756f6d87c241de975599f82b02fa"
},
{
"url": "https://git.kernel.org/stable/c/ef8ca5bb4c8b9696f38b1bebce1c851baa02b77b"
},
{
"url": "https://git.kernel.org/stable/c/5a8ad63158165bacd6a1d7420e0fe5364c913b06"
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{
"url": "https://git.kernel.org/stable/c/47e5e177e9e4e10da6f2759d5ce8d049e33efdc4"
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{
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{
"url": "https://git.kernel.org/stable/c/443f6b93442b10b972a16f57ceaaea75b77892b6"
},
{
"url": "https://git.kernel.org/stable/c/d3aba3442798ce4a4c8ce3104d7b286d61e605f9"
}
],
"title": "HID: alps: fix use-after-free on input2 registration failure",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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