{
  "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-2023-54068",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-54068",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-24T12:23:12.818Z",
    "updatedAt": "2026-08-05T09:16:55.942Z",
    "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": "f2fs: compress: fix to call f2fs_wait_on_page_writeback() in f2fs_write_raw_pages()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: compress: fix to call f2fs_wait_on_page_writeback() in f2fs_write_raw_pages()\n\nBUG_ON() will be triggered when writing files concurrently,\nbecause the same page is writtenback multiple times.\n\n1597 void folio_end_writeback(struct folio *folio)\n1598 {\n\t\t......\n1618     if (!__folio_end_writeback(folio))\n1619         BUG();\n\t\t......\n1625 }\n\nkernel BUG at mm/filemap.c:1619!\nCall Trace:\n <TASK>\n f2fs_write_end_io+0x1a0/0x370\n blk_update_request+0x6c/0x410\n blk_mq_end_request+0x15/0x130\n blk_complete_reqs+0x3c/0x50\n __do_softirq+0xb8/0x29b\n ? sort_range+0x20/0x20\n run_ksoftirqd+0x19/0x20\n smpboot_thread_fn+0x10b/0x1d0\n kthread+0xde/0x110\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x22/0x30\n </TASK>\n\nBelow is the concurrency scenario:\n\n[Process A]\t\t[Process B]\t\t[Process C]\nf2fs_write_raw_pages()\n  - redirty_page_for_writepage()\n  - unlock page()\n\t\t\tf2fs_do_write_data_page()\n\t\t\t  - lock_page()\n\t\t\t  - clear_page_dirty_for_io()\n\t\t\t  - set_page_writeback() [1st writeback]\n\t\t\t    .....\n\t\t\t    - unlock page()\n\n\t\t\t\t\t\tgeneric_perform_write()\n\t\t\t\t\t\t  - f2fs_write_begin()\n\t\t\t\t\t\t    - wait_for_stable_page()\n\n\t\t\t\t\t\t  - f2fs_write_end()\n\t\t\t\t\t\t    - set_page_dirty()\n\n  - lock_page()\n    - f2fs_do_write_data_page()\n      - set_page_writeback() [2st writeback]\n\nThis problem was introduced by the previous commit 7377e853967b (\"f2fs:\ncompress: fix potential deadlock of compress file\"). All pagelocks were\nreleased in f2fs_write_raw_pages(), but whether the page was\nin the writeback state was ignored in the subsequent writing process.\nLet's fix it by waiting for the page to writeback before writing.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a8226a45b2a9ce83ba7a167a387a00fecc319e71"
            },
            {
              "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "169134da419cb8ffbe3b0743bc24573e16952ea9"
            },
            {
              "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6604df2a9d07ba8f8fb1ac14046c2c83776faa4f"
            },
            {
              "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9940877c4fe752923a53f0f7372f2f152b6eccf0"
            },
            {
              "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ad31eed06c3b4d63b2d38322a271d4009aee4bb3"
            },
            {
              "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "babedcbac164cec970872b8097401ca913a80e61"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.6"
            },
            {
              "version": "5.10.180",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.28",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2.15",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "version": "6.4",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}