{
  "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-2023-54056",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-54056",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-24T12:23:04.559Z",
    "updatedAt": "2026-05-11T19:54:38.759Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "kheaders: Use array declaration instead of char",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nkheaders: Use array declaration instead of char\n\nUnder CONFIG_FORTIFY_SOURCE, memcpy() will check the size of destination\nand source buffers. Defining kernel_headers_data as \"char\" would trip\nthis check. Since these addresses are treated as byte arrays, define\nthem as arrays (as done everywhere else).\n\nThis was seen with:\n\n  $ cat /sys/kernel/kheaders.tar.xz >> /dev/null\n\n  detected buffer overflow in memcpy\n  kernel BUG at lib/string_helpers.c:1027!\n  ...\n  RIP: 0010:fortify_panic+0xf/0x20\n  [...]\n  Call Trace:\n   <TASK>\n   ikheaders_read+0x45/0x50 [kheaders]\n   kernfs_fop_read_iter+0x1a4/0x2f0\n  ...",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "719459877d58c8aced5845c1e5b98d8d87d09197"
            },
            {
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fcd2da2e6bf2640a31a2a5b118b50dc3635c707b"
            },
            {
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4a07d2d511e2703efd4387891d49e0326f1157f3"
            },
            {
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b9f6845a492de20679b84bda6b08be347c5819da"
            },
            {
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d6d1af6b8611801b585c53c0cc63626c8d339e96"
            },
            {
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "82d2e01b95c439fe55fab5e04fc83387c42d3a48"
            },
            {
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.2",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.2"
            },
            {
              "version": "5.4.243",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.180",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.28",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2.15",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "version": "6.4",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}