{
  "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-2023-54253",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-54253",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-30T12:15:49.460Z",
    "updatedAt": "2026-05-11T19:58:25.144Z",
    "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": "btrfs: set page extent mapped after read_folio in relocate_one_page",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: set page extent mapped after read_folio in relocate_one_page\n\nOne of the CI runs triggered the following panic\n\n  assertion failed: PagePrivate(page) && page->private, in fs/btrfs/subpage.c:229\n  ------------[ cut here ]------------\n  kernel BUG at fs/btrfs/subpage.c:229!\n  Internal error: Oops - BUG: 00000000f2000800 [#1] SMP\n  CPU: 0 PID: 923660 Comm: btrfs Not tainted 6.5.0-rc3+ #1\n  pstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n  pc : btrfs_subpage_assert+0xbc/0xf0\n  lr : btrfs_subpage_assert+0xbc/0xf0\n  sp : ffff800093213720\n  x29: ffff800093213720 x28: ffff8000932138b4 x27: 000000000c280000\n  x26: 00000001b5d00000 x25: 000000000c281000 x24: 000000000c281fff\n  x23: 0000000000001000 x22: 0000000000000000 x21: ffffff42b95bf880\n  x20: ffff42b9528e0000 x19: 0000000000001000 x18: ffffffffffffffff\n  x17: 667274622f736620 x16: 6e69202c65746176 x15: 0000000000000028\n  x14: 0000000000000003 x13: 00000000002672d7 x12: 0000000000000000\n  x11: ffffcd3f0ccd9204 x10: ffffcd3f0554ae50 x9 : ffffcd3f0379528c\n  x8 : ffff800093213428 x7 : 0000000000000000 x6 : ffffcd3f091771e8\n  x5 : ffff42b97f333948 x4 : 0000000000000000 x3 : 0000000000000000\n  x2 : 0000000000000000 x1 : ffff42b9556cde80 x0 : 000000000000004f\n  Call trace:\n   btrfs_subpage_assert+0xbc/0xf0\n   btrfs_subpage_set_dirty+0x38/0xa0\n   btrfs_page_set_dirty+0x58/0x88\n   relocate_one_page+0x204/0x5f0\n   relocate_file_extent_cluster+0x11c/0x180\n   relocate_data_extent+0xd0/0xf8\n   relocate_block_group+0x3d0/0x4e8\n   btrfs_relocate_block_group+0x2d8/0x490\n   btrfs_relocate_chunk+0x54/0x1a8\n   btrfs_balance+0x7f4/0x1150\n   btrfs_ioctl+0x10f0/0x20b8\n   __arm64_sys_ioctl+0x120/0x11d8\n   invoke_syscall.constprop.0+0x80/0xd8\n   do_el0_svc+0x6c/0x158\n   el0_svc+0x50/0x1b0\n   el0t_64_sync_handler+0x120/0x130\n   el0t_64_sync+0x194/0x198\n  Code: 91098021 b0007fa0 91346000 97e9c6d2 (d4210000)\n\nThis is the same problem outlined in 17b17fcd6d44 (\"btrfs:\nset_page_extent_mapped after read_folio in btrfs_cont_expand\") , and the\nfix is the same.  I originally looked for the same pattern elsewhere in\nour code, but mistakenly skipped over this code because I saw the page\ncache readahead before we set_page_extent_mapped, not realizing that\nthis was only in the !page case, that we can still end up with a\n!uptodate page and then do the btrfs_read_folio further down.\n\nThe fix here is the same as the above mentioned patch, move the\nset_page_extent_mapped call to after the btrfs_read_folio() block to\nmake sure that we have the subpage blocksize stuff setup properly before\nusing the page.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "32443de3382be98c0a8b8f6f50d23da2e10c4117",
              "status": "affected",
              "versionType": "git",
              "lessThan": "08daa38ca212d87f77beae839bc9be71079c7abf"
            },
            {
              "version": "32443de3382be98c0a8b8f6f50d23da2e10c4117",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9d1e020ed9649cf140fcfafd052cfdcce9e9d67d"
            },
            {
              "version": "32443de3382be98c0a8b8f6f50d23da2e10c4117",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e7f1326cc24e22b38afc3acd328480a1183f9e79"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.12"
            },
            {
              "version": "6.1.54",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.5.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "version": "6.6",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}