{
  "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-2026-68459",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-68459",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:51:19.713Z",
    "updatedAt": "2026-08-17T05:06:00.080Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "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: fix potential deadlock in gc_merge path of f2fs_balance_fs()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix potential deadlock in gc_merge path of f2fs_balance_fs()\n\nWhen we mount device w/ gc_merge mount option, we may suffer below\npotential deadlock:\n\nKworker\t\t\t\t\tGC trehad\t\t\tTruncator\n- f2fs_write_cache_pages\n - f2fs_write_single_data_page\n  - f2fs_do_write_data_page\n   - folio_start_writeback  --- set writeback flag on folio\n   - f2fs_outplace_write_data\n   : cached folio in internal bio cache\n  - f2fs_balance_fs\n   - wake_up(gc_thread)\n   : wake up gc thread to run foreground GC\n   - finish_wait(fggc_wq)\n   : wait on the waitqueue --- wait on GC thread to finish the work\n\t\t\t\t\t\t\t\t\t- truncate_inode_pages_range\n\t\t\t\t\t\t\t\t\t - __filemap_get_folio(, FGP_LOCK)  --- lock folio\n\t\t\t\t\t\t\t\t\t - truncate_inode_partial_folio\n\t\t\t\t\t\t\t\t\t  - folio_wait_writeback            --- wait on writeback being cleared\n\t\t\t\t\t- do_garbage_collect\n\t\t\t\t\t - move_data_page\n\t\t\t\t\t  - f2fs_get_lock_data_folio\n\t\t\t\t\t   - lock on folio  --- blocked on folio's lock\n\nIn order to avoid such deadlock, let's call below functions to commit\ncached bios in GC_MERGE path of f2fs_balance_fs() as the same as we did\nin NOGC_MERGE path.\n- f2fs_submit_merged_write(sbi, DATA);\n- f2fs_submit_all_merged_ipu_writes(sbi);",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8071500a8124e5a6d47d901a8d5ffd91743107a1"
            },
            {
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "status": "affected",
              "versionType": "git",
              "lessThan": "eb02f218aacb36365e0ca2339cbae81fb05d31a5"
            },
            {
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1436031b33fa23ab1ce7df5bc5500093413e8acf"
            },
            {
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b885c7783c19c36c7bf899492a0bffcd68afa8c7"
            },
            {
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "status": "affected",
              "versionType": "git",
              "lessThan": "89479a27fa4e1e11f378b3724944eabceb84f114"
            },
            {
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "status": "affected",
              "versionType": "git",
              "lessThan": "aa807064473abd6f2cafe419fb77ea402d3e3104"
            },
            {
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8b4468ec023d0d1b4669dfb867588997cc03a06b"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.8"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.96",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.39",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}