{
  "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-2023-53496",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53496",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-01T11:45:47.807Z",
    "updatedAt": "2026-05-11T19:46:07.408Z",
    "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": "x86/platform/uv: Use alternate source for socket to node data",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/platform/uv: Use alternate source for socket to node data\n\nThe UV code attempts to build a set of tables to allow it to do\nbidirectional socket<=>node lookups.\n\nBut when nr_cpus is set to a smaller number than actually present, the\ncpu_to_node() mapping information for unused CPUs is not available to\nbuild_socket_tables(). This results in skipping some nodes or sockets\nwhen creating the tables and leaving some -1's for later code to trip.\nover, causing oopses.\n\nThe problem is that the socket<=>node lookups are created by doing a\nloop over all CPUs, then looking up the CPU's APICID and socket. But\nif a CPU is not present, there is no way to start this lookup.\n\nInstead of looping over all CPUs, take CPUs out of the equation\nentirely. Loop over all APICIDs which are mapped to a valid NUMA node.\nThen just extract the socket-id from the APICID.\n\nThis avoid tripping over disabled CPUs.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8a50c58519271dd24ba760bb282875f6ad66ee71",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0d01a0c3046d1545391ef7bb1f114743d00e3793"
            },
            {
              "version": "8a50c58519271dd24ba760bb282875f6ad66ee71",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5290e88ba2c742ca77c5f5b690e5af549cfd8591"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.5",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.5"
            },
            {
              "version": "6.5.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "version": "6.6",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}