{
  "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-2023-52976",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-52976",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-03-27T16:43:16.596Z",
    "updatedAt": "2026-05-23T15:27:38.596Z",
    "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": "efi: fix potential NULL deref in efi_mem_reserve_persistent",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nefi: fix potential NULL deref in efi_mem_reserve_persistent\n\nWhen iterating on a linked list, a result of memremap is dereferenced\nwithout checking it for NULL.\n\nThis patch adds a check that falls back on allocating a new page in\ncase memremap doesn't succeed.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\n[ardb: return -ENOMEM instead of breaking out of the loop]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "18df7577adae6c6c778bf774b3aebcacbc1fb439",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d92a25627bcdf264183670da73c9a60c0bac327e"
            },
            {
              "version": "18df7577adae6c6c778bf774b3aebcacbc1fb439",
              "status": "affected",
              "versionType": "git",
              "lessThan": "87d4ff18738fd71e7e3c10827c80257da6283697"
            },
            {
              "version": "18df7577adae6c6c778bf774b3aebcacbc1fb439",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c"
            },
            {
              "version": "18df7577adae6c6c778bf774b3aebcacbc1fb439",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a2e6a9ff89f13666a1c3ff7195612ab949ea9afc"
            },
            {
              "version": "18df7577adae6c6c778bf774b3aebcacbc1fb439",
              "status": "affected",
              "versionType": "git",
              "lessThan": "966d47e1f27c45507c5df82b2a2157e5a4fd3909"
            },
            {
              "version": "b5961ecad7121fec138ebee7d9eba4863f9dc6e7",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.1.16",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.2"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.2",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.2"
            },
            {
              "version": "5.4.232",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.168",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.93",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}