{
  "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-2026-97439",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-97439",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-24T16:03:52.427Z",
    "updatedAt": "2026-10-03T10:58:24.299Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "fs/ntfs3: preserve non-DOS attribute bits in system.dos_attrib",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: preserve non-DOS attribute bits in system.dos_attrib\n\n[BUG]\nA corrupted ntfs3 image can hit a NULL function pointer call in\ngeneric_perform_write() after toggling system.ntfs_attrib and then\noverwriting system.dos_attrib on the same file.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000000\n\\#PF: supervisor instruction fetch in kernel mode\n\\#PF: error_code(0x0010) - not-present page\nPGD bed5067 P4D bed5067 PUD 0\nOops: Oops: 0010 [#1] SMP KASAN NOPTI\nRIP: 0010:0x0\nCode: Unable to access opcode bytes at 0xffffffffffffffd6.\nRSP: 0018:ffff88801025f988 EFLAGS: 00010246\nCall Trace:\n generic_perform_write+0x409/0x8c0 mm/filemap.c:4255\n __generic_file_write_iter+0x1bb/0x200 mm/filemap.c:4372\n ntfs_file_write_iter+0xcd9/0x1c20 fs/ntfs3/file.c:1253\n new_sync_write fs/read_write.c:593 [inline]\n vfs_write+0x63b/0xf70 fs/read_write.c:686\n ksys_write+0x133/0x250 fs/read_write.c:738\n __do_sys_write fs/read_write.c:749 [inline]\n __se_sys_write fs/read_write.c:746 [inline]\n __x64_sys_write+0x77/0xc0 fs/read_write.c:746\n ...\n\n[CAUSE]\nsystem.ntfs_attrib updates ATTR_DATA flags via ni_new_attr_flags()\nand switches i_mapping->a_ops to ntfs_aops_cmpr when\nFILE_ATTRIBUTE_COMPRESSED is set. system.dos_attrib then overwrites\nni->std_fa from a one-byte DOS attribute value, clearing the compression\nbit without updating ATTR_DATA or the mapping operations.\n\nOld buffered writes use is_compressed(ni) to choose\n__generic_file_write_iter(). That leaves generic_perform_write() calling\na NULL write_begin callback from ntfs_aops_cmpr.\n\n[FIX]\nTreat system.dos_attrib as a low-byte DOS attribute update and preserve the\nexisting non-DOS attribute bits in ni->std_fa. This keeps compressed and\nsparse state consistent with ATTR_DATA and the mapping operations while\nkeeping the existing DOS attribute semantics intact.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
              "status": "affected",
              "versionType": "git",
              "lessThan": "533217b90addd57cc16f1c974e023c72d18949c7"
            },
            {
              "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f2d6bc89e2236939df189831707c8cdad199f57a"
            },
            {
              "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fdc9f65aa6631df04238c6154713bacd5133d77c"
            },
            {
              "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2de91ae285b0b878604d2bd83c3c395a8071e482"
            },
            {
              "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
              "status": "affected",
              "versionType": "git",
              "lessThan": "407ee19828a7d9700969ed9cc53be50d0f533619"
            },
            {
              "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b1c1101067d9536bcb0fe023b96ee2dde5535959"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}