{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-98201",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98201",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-06T08:44:38.952Z",
    "updatedAt": "2026-10-19T09:15:32.269Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Input: zero ff_effect before compat copy in input_ff_effect_from_user",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: zero ff_effect before compat copy in input_ff_effect_from_user\n\nIn the compat path input_ff_effect_from_user() aliases the caller's\nnative struct ff_effect with the smaller struct ff_effect_compat and\ncopies only the compat sized prefix:\n\n\tcompat_effect = (struct ff_effect_compat *)effect;\n\n\tif (copy_from_user(compat_effect, buffer,\n\t\t\t   sizeof(struct ff_effect_compat)))\n\nThe tail of the native structure is never written. Callers pass an\nuninitialized on-stack object, for example evdev_do_ioctl() for\nEVIOCSFF, so those bytes keep their previous stack contents.\ninput_ff_upload() then stores the full native structure in\nff->effects[id], from where a uinput based force feedback daemon can\nread it back via UI_BEGIN_FF_UPLOAD, disclosing kernel stack memory to\nuserspace.\n\nZero the effect before the compat copy.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ed0905fda39682d3da7937184397d3276abbffa8"
            },
            {
              "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ec174c2ab1abb76b20fa167c6db848c3d97aa838"
            },
            {
              "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6c26681c5668c973bd0e951407d670ac60d9cd66"
            },
            {
              "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c5e573bb095d502be7cbbaa99c26a20984111c6d"
            },
            {
              "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b878720e8bcaa4cf7163a5081f904dd6baf11b2c"
            },
            {
              "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0d05b43b55d4784a42ce8fb318175f8ad7d9af5a"
            },
            {
              "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ed0406e490f48ed180df140fe2a81be26bccb1a9"
            },
            {
              "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f84819ef8d66931ee3998fee3c4f03230f4cb6cc"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.29",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.29"
            },
            {
              "version": "5.10.271",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.112",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.54",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}