{
  "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-2026-53047",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53047",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-24T16:29:53.491Z",
    "updatedAt": "2026-06-24T16:29:53.491Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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/capsule-loader: fix incorrect sizeof in phys array reallocation",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nefi/capsule-loader: fix incorrect sizeof in phys array reallocation\n\nThe krealloc() call for cap_info->phys in __efi_capsule_setup_info() uses\nsizeof(phys_addr_t *) instead of sizeof(phys_addr_t), which might be\ncausing an undersized allocation.\n\nThe allocation is also inconsistent with the initial array allocation in\nefi_capsule_open() that allocates one entry with sizeof(phys_addr_t),\nand the efi_capsule_write() function that stores phys_addr_t values (not\npointers) via page_to_phys().\n\nOn 64-bit systems where sizeof(phys_addr_t) == sizeof(phys_addr_t *), this\ngoes unnoticed. On 32-bit systems with PAE where phys_addr_t is 64-bit but\npointers are 32-bit, this allocates half the required space, which might\nlead to a heap buffer overflow when storing physical addresses.\n\nThis is similar to the bug fixed in commit fccfa646ef36 (\"efi/capsule-loader:\nfix incorrect allocation size\") which fixed the same issue at the initial\nallocation site.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f24c4d478013d82bd1b943df566fff3561d52864",
              "status": "affected",
              "versionType": "git",
              "lessThan": "22022cd8851703a58f67615a17bc7e9e8682785b"
            },
            {
              "version": "f24c4d478013d82bd1b943df566fff3561d52864",
              "status": "affected",
              "versionType": "git",
              "lessThan": "67adde6bfdfd563a54b045d59aeb9a2d90c80697"
            },
            {
              "version": "f24c4d478013d82bd1b943df566fff3561d52864",
              "status": "affected",
              "versionType": "git",
              "lessThan": "608e1f7bc9d171ab26c1fba288c97fc76363c27d"
            },
            {
              "version": "f24c4d478013d82bd1b943df566fff3561d52864",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8be69e9245f805566bac68ffc8574b64735fd996"
            },
            {
              "version": "f24c4d478013d82bd1b943df566fff3561d52864",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5e185330d902b12fe8e6eb4b8514b5d736d8d66d"
            },
            {
              "version": "f24c4d478013d82bd1b943df566fff3561d52864",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e0e6b14995fd6fa2c0df8c712d76ab32f0694c31"
            },
            {
              "version": "f24c4d478013d82bd1b943df566fff3561d52864",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ab3f7098a3a27175b91cfc947950f5c26855801b"
            },
            {
              "version": "f24c4d478013d82bd1b943df566fff3561d52864",
              "status": "affected",
              "versionType": "git",
              "lessThan": "48a428215782321b56956974f23593e40ce84b7a"
            },
            {
              "version": "95a362c9a6892085f714eb6e31eea6a0e3aa93bf",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.14.13",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "5.10.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.175",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.141",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.91",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.33",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}