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GHSA-CWF6-7JP2-62CF

Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

f2fs: fix dentry folio leak in find_in_level

find_in_level() gets a dentry folio with f2fs_find_data_folio() before calling find_in_block(). If find_in_block() returns an error, the function stores the error in res_folio and breaks out of the loop without dropping the dentry folio.

This leaks the folio reference on the find_in_block() error path. Drop the dentry folio before returning the error to the caller.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89837"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T11:16:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix dentry folio leak in find_in_level\n\nfind_in_level() gets a dentry folio with f2fs_find_data_folio() before\ncalling find_in_block().  If find_in_block() returns an error, the\nfunction stores the error in res_folio and breaks out of the loop without\ndropping the dentry folio.\n\nThis leaks the folio reference on the find_in_block() error path.  Drop\nthe dentry folio before returning the error to the caller.",
  "id": "GHSA-cwf6-7jp2-62cf",
  "modified": "2026-09-16T12:30:38Z",
  "published": "2026-09-16T12:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89837"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93a3e6a4c9e726a13a935963e8dc43d181db1527"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aefb4b0f465b6f95fe02b52d1822a3fb4a9ae922"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cca7d3e30bf30333314e31bc70b9a739f1342167"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-89837 (GCVE-0-2026-89837)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:31 – Updated: 2026-09-16 10:31

Title

f2fs: fix dentry folio leak in find_in_level

Summary

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix dentry folio leak in find_in_level find_in_level() gets a dentry folio with f2fs_find_data_folio() before calling find_in_block(). If find_in_block() returns an error, the function stores the error in res_folio and breaks out of the loop without dropping the dentry folio. This leaks the folio reference on the find_in_block() error path. Drop the dentry folio before returning the error to the caller.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/aefb4b0f465b6f95f…
https://git.kernel.org/stable/c/93a3e6a4c9e726a13…
https://git.kernel.org/stable/c/cca7d3e30bf303333…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7ad08a58bf67594057362e45cbddd3e27e53e557 , < aefb4b0f465b6f95fe02b52d1822a3fb4a9ae922 (git) Affected: 7ad08a58bf67594057362e45cbddd3e27e53e557 , < 93a3e6a4c9e726a13a935963e8dc43d181db1527 (git) Affected: 7ad08a58bf67594057362e45cbddd3e27e53e557 , < cca7d3e30bf30333314e31bc70b9a739f1342167 (git)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.5 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/dir.c"
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          "vendor": "Linux",
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              "versionType": "git"
            }
          ]
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            "fs/f2fs/dir.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "5.11"
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            },
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              "version": "7.2.5",
              "versionType": "semver"
            },
            {
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              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
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                  "versionStartIncluding": "5.11",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix dentry folio leak in find_in_level\n\nfind_in_level() gets a dentry folio with f2fs_find_data_folio() before\ncalling find_in_block().  If find_in_block() returns an error, the\nfunction stores the error in res_folio and breaks out of the loop without\ndropping the dentry folio.\n\nThis leaks the folio reference on the find_in_block() error path.  Drop\nthe dentry folio before returning the error to the caller."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T10:31:11.557Z",
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          "url": "https://git.kernel.org/stable/c/cca7d3e30bf30333314e31bc70b9a739f1342167"
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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.

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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GHSA-CWF6-7JP2-62CF

CVE-2026-89837 (GCVE-0-2026-89837)

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