Vulnerability-Lookup

FKIE_CVE-2026-68459

Vulnerability from fkie_nvd - Published: 2026-08-15 06:18 - Updated: 2026-08-17 06:17

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix potential deadlock in gc_merge path of f2fs_balance_fs() When we mount device w/ gc_merge mount option, we may suffer below potential deadlock: Kworker GC trehad Truncator - f2fs_write_cache_pages - f2fs_write_single_data_page - f2fs_do_write_data_page - folio_start_writeback --- set writeback flag on folio - f2fs_outplace_write_data : cached folio in internal bio cache - f2fs_balance_fs - wake_up(gc_thread) : wake up gc thread to run foreground GC - finish_wait(fggc_wq) : wait on the waitqueue --- wait on GC thread to finish the work - truncate_inode_pages_range - __filemap_get_folio(, FGP_LOCK) --- lock folio - truncate_inode_partial_folio - folio_wait_writeback --- wait on writeback being cleared - do_garbage_collect - move_data_page - f2fs_get_lock_data_folio - lock on folio --- blocked on folio's lock In order to avoid such deadlock, let's call below functions to commit cached bios in GC_MERGE path of f2fs_balance_fs() as the same as we did in NOGC_MERGE path. - f2fs_submit_merged_write(sbi, DATA); - f2fs_submit_all_merged_ipu_writes(sbi);

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1436031b33fa23ab1ce7df5bc5500093413e8acf
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8071500a8124e5a6d47d901a8d5ffd91743107a1
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/89479a27fa4e1e11f378b3724944eabceb84f114
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8b4468ec023d0d1b4669dfb867588997cc03a06b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/aa807064473abd6f2cafe419fb77ea402d3e3104
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b885c7783c19c36c7bf899492a0bffcd68afa8c7
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eb02f218aacb36365e0ca2339cbae81fb05d31a5

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/segment.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8071500a8124e5a6d47d901a8d5ffd91743107a1",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "eb02f218aacb36365e0ca2339cbae81fb05d31a5",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "1436031b33fa23ab1ce7df5bc5500093413e8acf",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "b885c7783c19c36c7bf899492a0bffcd68afa8c7",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "89479a27fa4e1e11f378b3724944eabceb84f114",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "aa807064473abd6f2cafe419fb77ea402d3e3104",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "8b4468ec023d0d1b4669dfb867588997cc03a06b",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/segment.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s lock\n\nIn order to avoid such deadlock, let\u0027s 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);"
    }
  ],
  "id": "CVE-2026-68459",
  "lastModified": "2026-08-17T06:17:55.127",
  "metrics": {},
  "published": "2026-08-15T06:18:15.460",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1436031b33fa23ab1ce7df5bc5500093413e8acf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8071500a8124e5a6d47d901a8d5ffd91743107a1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/89479a27fa4e1e11f378b3724944eabceb84f114"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8b4468ec023d0d1b4669dfb867588997cc03a06b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aa807064473abd6f2cafe419fb77ea402d3e3104"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b885c7783c19c36c7bf899492a0bffcd68afa8c7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eb02f218aacb36365e0ca2339cbae81fb05d31a5"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-68459 (GCVE-0-2026-68459)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:51 – Updated: 2026-08-17 05:06

Title

f2fs: fix potential deadlock in gc_merge path of f2fs_balance_fs()

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/8071500a8124e5a6d…
https://git.kernel.org/stable/c/eb02f218aacb36365…
https://git.kernel.org/stable/c/1436031b33fa23ab1…
https://git.kernel.org/stable/c/b885c7783c19c36c7…
https://git.kernel.org/stable/c/89479a27fa4e1e11f…
https://git.kernel.org/stable/c/aa807064473abd6f2…
https://git.kernel.org/stable/c/8b4468ec023d0d1b4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 351df4b201157351c7d26bf12c3eeb9dbce98854 , < 8071500a8124e5a6d47d901a8d5ffd91743107a1 (git) Affected: 351df4b201157351c7d26bf12c3eeb9dbce98854 , < eb02f218aacb36365e0ca2339cbae81fb05d31a5 (git) Affected: 351df4b201157351c7d26bf12c3eeb9dbce98854 , < 1436031b33fa23ab1ce7df5bc5500093413e8acf (git) Affected: 351df4b201157351c7d26bf12c3eeb9dbce98854 , < b885c7783c19c36c7bf899492a0bffcd68afa8c7 (git) Affected: 351df4b201157351c7d26bf12c3eeb9dbce98854 , < 89479a27fa4e1e11f378b3724944eabceb84f114 (git) Affected: 351df4b201157351c7d26bf12c3eeb9dbce98854 , < aa807064473abd6f2cafe419fb77ea402d3e3104 (git) Affected: 351df4b201157351c7d26bf12c3eeb9dbce98854 , < 8b4468ec023d0d1b4669dfb867588997cc03a06b (git)
Linux	Linux	Affected: 3.8 Unaffected: 0 , < 3.8 (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/segment.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8071500a8124e5a6d47d901a8d5ffd91743107a1",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "eb02f218aacb36365e0ca2339cbae81fb05d31a5",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "1436031b33fa23ab1ce7df5bc5500093413e8acf",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "b885c7783c19c36c7bf899492a0bffcd68afa8c7",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "89479a27fa4e1e11f378b3724944eabceb84f114",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "aa807064473abd6f2cafe419fb77ea402d3e3104",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            },
            {
              "lessThan": "8b4468ec023d0d1b4669dfb867588997cc03a06b",
              "status": "affected",
              "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/segment.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.212",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.96",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.39",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s lock\n\nIn order to avoid such deadlock, let\u0027s 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);"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:06:00.080Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8071500a8124e5a6d47d901a8d5ffd91743107a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/eb02f218aacb36365e0ca2339cbae81fb05d31a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/1436031b33fa23ab1ce7df5bc5500093413e8acf"
        },
        {
          "url": "https://git.kernel.org/stable/c/b885c7783c19c36c7bf899492a0bffcd68afa8c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/89479a27fa4e1e11f378b3724944eabceb84f114"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa807064473abd6f2cafe419fb77ea402d3e3104"
        },
        {
          "url": "https://git.kernel.org/stable/c/8b4468ec023d0d1b4669dfb867588997cc03a06b"
        }
      ],
      "title": "f2fs: fix potential deadlock in gc_merge path of f2fs_balance_fs()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68459",
    "datePublished": "2026-08-15T05:51:19.713Z",
    "dateReserved": "2026-07-30T09:28:09.395Z",
    "dateUpdated": "2026-08-17T05:06:00.080Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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FKIE_CVE-2026-68459

CVE-2026-68459 (GCVE-0-2026-68459)

Tags

Sightings

Nomenclature