Vulnerability-Lookup

GHSA-HHX5-CRR2-8G8P

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-13 21:31

Details

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

ext4: avoid resizing to a partial cluster size

This patch avoids an attempt to resize the filesystem to an unaligned cluster boundary. An online resize to a size that is not integral to cluster size results in the last iteration attempting to grow the fs by a negative amount, which trips a BUG_ON and leaves the fs with a corrupted in-memory superblock.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50020"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1284"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:30Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid resizing to a partial cluster size\n\nThis patch avoids an attempt to resize the filesystem to an\nunaligned cluster boundary.  An online resize to a size that is not\nintegral to cluster size results in the last iteration attempting to\ngrow the fs by a negative amount, which trips a BUG_ON and leaves the fs\nwith a corrupted in-memory superblock.",
  "id": "GHSA-hhx5-crr2-8g8p",
  "modified": "2025-11-13T21:31:17Z",
  "published": "2025-06-18T12:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50020"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0082e99a9074ff88eff729c70c93454c8588d8e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/53f62a4201be1cfc1e3c971e566888b182c3ffb0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72b850a2a996f72541172e7cf686d54a2b29bcd8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bdfb01fc5f6b3696728aeb527c50386e0ee09a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80288883294c5b4ed18bae0d8bd9c4a12f297074"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/952b3dc02baaae6a69c71c0aca23e06741182d9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6805b3dcf5cd41f2ae3a03dca43411135b99849"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-50020 (GCVE-0-2022-50020)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:01 – Updated: 2026-05-11 19:11

Title

ext4: avoid resizing to a partial cluster size

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid resizing to a partial cluster size This patch avoids an attempt to resize the filesystem to an unaligned cluster boundary. An online resize to a size that is not integral to cluster size results in the last iteration attempting to grow the fs by a negative amount, which trips a BUG_ON and leaves the fs with a corrupted in-memory superblock.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/7bdfb01fc5f6b3696…
https://git.kernel.org/stable/c/a6805b3dcf5cd41f2…
https://git.kernel.org/stable/c/80288883294c5b4ed…
https://git.kernel.org/stable/c/72b850a2a996f7254…
https://git.kernel.org/stable/c/0082e99a9074ff88e…
https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d77147ff443b255d82c907a632c825b2cc610b10 , < 7bdfb01fc5f6b3696728aeb527c50386e0ee09a1 (git) Affected: d77147ff443b255d82c907a632c825b2cc610b10 , < a6805b3dcf5cd41f2ae3a03dca43411135b99849 (git) Affected: d77147ff443b255d82c907a632c825b2cc610b10 , < 80288883294c5b4ed18bae0d8bd9c4a12f297074 (git) Affected: d77147ff443b255d82c907a632c825b2cc610b10 , < 72b850a2a996f72541172e7cf686d54a2b29bcd8 (git) Affected: d77147ff443b255d82c907a632c825b2cc610b10 , < 0082e99a9074ff88eff729c70c93454c8588d8e1 (git) Affected: d77147ff443b255d82c907a632c825b2cc610b10 , < 69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd (git)
Linux	Linux	Affected: 4.15 Unaffected: 0 , < 4.15 (semver) Unaffected: 4.19.256 , ≤ 4.19.* (semver) Unaffected: 5.4.211 , ≤ 5.4.* (semver) Unaffected: 5.10.138 , ≤ 5.10.* (semver) Unaffected: 5.15.63 , ≤ 5.15.* (semver) Unaffected: 5.19.4 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix)

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JSON

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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/resize.c"
          ],
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          "vendor": "Linux",
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              "status": "affected",
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              "versionType": "git"
            },
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
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          "versions": [
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              "status": "unaffected",
              "version": "5.4.211",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "5.19.4",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
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    "cveId": "CVE-2022-50020",
    "datePublished": "2025-06-18T11:01:24.227Z",
    "dateReserved": "2025-06-18T10:57:27.393Z",
    "dateUpdated": "2026-05-11T19:11:14.053Z",
    "state": "PUBLISHED"
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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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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