{
  "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-2026-93053",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-93053",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:10:42.397Z",
    "updatedAt": "2026-10-19T09:04:48.197Z",
    "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": "speakup: keyhelp: guard letter_offsets possible out-of-range indexing",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nspeakup: keyhelp: guard letter_offsets possible out-of-range indexing\n\nhelp_init() builds letter_offsets[] by using the first byte of each\nfunction name as an index via `(start & 31) - 1`. If function_names are\noverridden from sysfs (root) with a name starting outside [a–z], the\nindex underflows or exceeds the array, leading to OOB write.\n\nFunction names can be overridden with the following commands as root:\n\n    modprobe speakup_soft\n    echo \"0 _bad\" > /sys/accessibility/speakup/i18n/function_names\n    # then press Insert+2 on /dev/tty\n\nThis fix checks the first letter in help_init(), and if it is not in the\n[a–z] range the function returns an error to the caller. Eventually this\nerror is propagated to drivers/accessibility/speakup/main.c:2217, which\ncauses a bleep sound.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "c6e3fd22cd538365bfeb82997d5b89562e077d42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fd339b9ef0accb2c24a5285df842552ebf5eb146"
            },
            {
              "version": "c6e3fd22cd538365bfeb82997d5b89562e077d42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "900cd6e5ef46bd15153762fb26bb03f874fccc52"
            },
            {
              "version": "c6e3fd22cd538365bfeb82997d5b89562e077d42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6b39969c724d39b6062efa354dc2d38442bfd021"
            },
            {
              "version": "c6e3fd22cd538365bfeb82997d5b89562e077d42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2e91ab73f9beb659f581e2a6a09f79ace1140905"
            },
            {
              "version": "c6e3fd22cd538365bfeb82997d5b89562e077d42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d7deb90c4cd086cb111f0ecc9da021218fbde1b0"
            },
            {
              "version": "c6e3fd22cd538365bfeb82997d5b89562e077d42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5310334762c3f08f51dc2414344dd47492c07d1d"
            },
            {
              "version": "c6e3fd22cd538365bfeb82997d5b89562e077d42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ca4489b3e54666a7cac7294e71a3cf64e5e95286"
            },
            {
              "version": "c6e3fd22cd538365bfeb82997d5b89562e077d42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6a19ad4d68c95185308cd9e5d169b10a2cf236c8"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.37",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.37"
            },
            {
              "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": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}