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HID: alps: fix use-after-free on input2 registration failure

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-98501

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-98501

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2562756dde550901c224e3805102bdfc17e7d13a",
        "lessThan": "64f824dccfd316fd3db8ea1cc4e8a76ad6a02740",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2562756dde550901c224e3805102bdfc17e7d13a",
        "lessThan": "2e55d76e6e8a756f6d87c241de975599f82b02fa",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2562756dde550901c224e3805102bdfc17e7d13a",
        "lessThan": "ef8ca5bb4c8b9696f38b1bebce1c851baa02b77b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2562756dde550901c224e3805102bdfc17e7d13a",
        "lessThan": "5a8ad63158165bacd6a1d7420e0fe5364c913b06",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2562756dde550901c224e3805102bdfc17e7d13a",
        "lessThan": "47e5e177e9e4e10da6f2759d5ce8d049e33efdc4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2562756dde550901c224e3805102bdfc17e7d13a",
        "lessThan": "925da1d2a24787f24872de13a4680437c54de179",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2562756dde550901c224e3805102bdfc17e7d13a",
        "lessThan": "443f6b93442b10b972a16f57ceaaea75b77892b6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2562756dde550901c224e3805102bdfc17e7d13a",
        "lessThan": "d3aba3442798ce4a4c8ce3104d7b286d61e605f9",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/hid/hid-alps.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.8"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.8",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.271",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.222",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.189",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.158",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.112",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.55",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.9",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/hid/hid-alps.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-98501

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#55606 · Revision 1
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Publisher date
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