FKIE_CVE-2026-98501
Vulnerability from fkie_nvd - Published: 2026-10-18 16:17 - Updated: 2026-10-24 14:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
HID: alps: fix use-after-free on input2 registration failure
alps_input_configured() stores data->input2 before calling
input_register_device(). If registration fails, input_free_device()
frees the input device but data->input2 still points to the freed memory.
alps_input_configured() calls hid_hw_open() before allocating input2, so
URBs are already active and raw_event can fire during the failure window.
A U1_SP_ABSOLUTE_REPORT_ID report arriving then causes u1_raw_event()
to dereference the freed data->input2 -> use-after-free.
Fix by only storing input2 into drvdata after successful registration
and adding a NULL guard in the raw_event path.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/hid/hid-alps.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "64f824dccfd316fd3db8ea1cc4e8a76ad6a02740",
"status": "affected",
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
"versionType": "git"
},
{
"lessThan": "2e55d76e6e8a756f6d87c241de975599f82b02fa",
"status": "affected",
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
"versionType": "git"
},
{
"lessThan": "ef8ca5bb4c8b9696f38b1bebce1c851baa02b77b",
"status": "affected",
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
"versionType": "git"
},
{
"lessThan": "5a8ad63158165bacd6a1d7420e0fe5364c913b06",
"status": "affected",
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
"versionType": "git"
},
{
"lessThan": "47e5e177e9e4e10da6f2759d5ce8d049e33efdc4",
"status": "affected",
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
"versionType": "git"
},
{
"lessThan": "925da1d2a24787f24872de13a4680437c54de179",
"status": "affected",
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
"versionType": "git"
},
{
"lessThan": "443f6b93442b10b972a16f57ceaaea75b77892b6",
"status": "affected",
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
"versionType": "git"
},
{
"lessThan": "d3aba3442798ce4a4c8ce3104d7b286d61e605f9",
"status": "affected",
"version": "2562756dde550901c224e3805102bdfc17e7d13a",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/hid/hid-alps.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.8"
},
{
"lessThan": "4.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"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-\u003einput2 before calling\ninput_register_device(). If registration fails, input_free_device()\nfrees the input device but data-\u003einput2 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-\u003einput2 -\u003e use-after-free.\n\nFix by only storing input2 into drvdata after successful registration\nand adding a NULL guard in the raw_event path."
}
],
"id": "CVE-2026-98501",
"lastModified": "2026-10-24T14:16:44.773",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.2,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-10-18T16:17:01.143",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/2e55d76e6e8a756f6d87c241de975599f82b02fa"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/443f6b93442b10b972a16f57ceaaea75b77892b6"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/47e5e177e9e4e10da6f2759d5ce8d049e33efdc4"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5a8ad63158165bacd6a1d7420e0fe5364c913b06"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/64f824dccfd316fd3db8ea1cc4e8a76ad6a02740"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/925da1d2a24787f24872de13a4680437c54de179"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d3aba3442798ce4a4c8ce3104d7b286d61e605f9"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ef8ca5bb4c8b9696f38b1bebce1c851baa02b77b"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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Nomenclature
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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