{
  "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-2026-89628",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89628",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:45:24.203Z",
    "updatedAt": "2026-10-19T08:50:00.490Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "HID: picolcd: clamp eeprom debugfs read to bytes actually received",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: picolcd: clamp eeprom debugfs read to bytes actually received\n\npicolcd_debug_eeprom_read() trusts resp->raw_data[2] -- a length byte\nsupplied by the device in its REPORT_EE_DATA reply -- clamped only to\nthe caller's read() count:\n\n\tret = resp->raw_data[2];\n\tif (ret > s)\n\t\tret = s;\n\tif (copy_to_user(u, resp->raw_data+3, ret))\n\nIt never checks resp->raw_size, the number of bytes picolcd_raw_event()\nactually copied into the 64-byte raw_data[] of the kmalloc'd struct\npicolcd_pending. A device (or a spoofed picoLCD) returning a length byte\nof 0xff, read with a count >= 255, makes copy_to_user() read past\nraw_data[] into adjacent slab memory and return it to userspace through\nthe debugfs \"eeprom\" file:\n\n\tBUG: KASAN: slab-out-of-bounds in _copy_to_user\n\tRead of size 255 ... picolcd_debug_eeprom_read+0x214/0x2f0 [hid_picolcd]\n\nThe debug-dump path in the same file already validates the device length\nbyte against the received size before trusting it; this read does not.\nThe file is created S_IRUSR (root-only) and a crafted device is needed,\nso it is neither unprivileged- nor remotely-triggerable.\n\nClamp the copy length to resp->raw_size - 3 (the payload actually\nreceived, minus the 3-byte header), floored at 0 for short replies.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1a02056c2bf7ef9b5fd05ee6913aeeadb703c443"
            },
            {
              "version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "65daa322f1021d8206f8032c4cd4c0cb2d26c7c3"
            },
            {
              "version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8dc662af019158690c470edd2e2857657f700abb"
            },
            {
              "version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4daf432c94a42e7be6aa10b012b33af5ed9bc118"
            },
            {
              "version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a3e6e8d7198a9f3861861520a38b673684a1062b"
            },
            {
              "version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "471f4a939c66d1d44aece2321807abf609fc9098"
            },
            {
              "version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "699a3c8b56e168ca19d12722f3f5ef1d6f4b1d84"
            },
            {
              "version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e9c667395ac1f8024f623250b32bae4c7af9caa0"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.35",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.35"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}