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

Vulnerability from cvelistv5 – Published: 2025-06-18 11:01 – Updated: 2025-12-23 13:26
VLAI?
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
Impacted 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)
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    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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Show details on NVD website

{
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          "programFiles": [
            "fs/ext4/resize.c"
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              "version": "5.19.4",
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            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-23T13:26:29.428Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        },
        {
          "url": "https://git.kernel.org/stable/c/a6805b3dcf5cd41f2ae3a03dca43411135b99849"
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        {
          "url": "https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd"
        }
      ],
      "title": "ext4: avoid resizing to a partial cluster size",
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      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50020",
    "datePublished": "2025-06-18T11:01:24.227Z",
    "dateReserved": "2025-06-18T10:57:27.393Z",
    "dateUpdated": "2025-12-23T13:26:29.428Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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