{
  "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-2026-43303",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43303",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-08T13:11:23.561Z",
    "updatedAt": "2026-10-19T19:16:26.022Z",
    "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": "mm/page_alloc: clear page->private in free_pages_prepare()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/page_alloc: clear page->private in free_pages_prepare()\n\nSeveral subsystems (slub, shmem, ttm, etc.) use page->private but don't\nclear it before freeing pages.  When these pages are later allocated as\nhigh-order pages and split via split_page(), tail pages retain stale\npage->private values.\n\nThis causes a use-after-free in the swap subsystem.  The swap code uses\npage->private to track swap count continuations, assuming freshly\nallocated pages have page->private == 0.  When stale values are present,\nswap_count_continued() incorrectly assumes the continuation list is valid\nand iterates over uninitialized page->lru containing LIST_POISON values,\ncausing a crash:\n\n  KASAN: maybe wild-memory-access in range [0xdead000000000100-0xdead000000000107]\n  RIP: 0010:__do_sys_swapoff+0x1151/0x1860\n\nFix this by clearing page->private in free_pages_prepare(), ensuring all\nfreed pages have clean state regardless of previous use.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3b8000ae185cb068adbda5f966a3835053c85fd4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e7790ab165713b79b1617ce659742ceb3a859d05"
            },
            {
              "version": "3b8000ae185cb068adbda5f966a3835053c85fd4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3edb8ebbf79b9016040e8f3421d723ae3d542b32"
            },
            {
              "version": "3b8000ae185cb068adbda5f966a3835053c85fd4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f9719e32a67b4b00b3c9b133e8b5ffa72a26b67b"
            },
            {
              "version": "3b8000ae185cb068adbda5f966a3835053c85fd4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "23b82b7a26182ad840ae67d390d7ec9771e8c00f"
            },
            {
              "version": "3b8000ae185cb068adbda5f966a3835053c85fd4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d757c793853ec5483eb41ec2942c300b8fa720fb"
            },
            {
              "version": "3b8000ae185cb068adbda5f966a3835053c85fd4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ac1ea219590c09572ed5992dc233bbf7bb70fef9"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.18"
            },
            {
              "version": "6.1.176",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.143",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.93",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.16",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}