Vulnerability-Lookup

GHSA-8XQR-G5FM-P394

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30

Details

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

ext2: Add sanity checks for group and filesystem size

Add sanity check that filesystem size does not exceed the underlying device size and that group size is big enough so that metadata can fit into it. This avoid trying to mount some crafted filesystems with extremely large group counts.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50815"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:15:55Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next2: Add sanity checks for group and filesystem size\n\nAdd sanity check that filesystem size does not exceed the underlying\ndevice size and that group size is big enough so that metadata can fit\ninto it. This avoid trying to mount some crafted filesystems with\nextremely large group counts.",
  "id": "GHSA-8xqr-g5fm-p394",
  "modified": "2025-12-30T15:30:26Z",
  "published": "2025-12-30T15:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50815"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/321440079763998076b75e0c802524e2218a7d97"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40ff52527daec00cf1530c17a95636916ddd3b38"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d766f2d1e3e3bd44024a7f971ffcf8b8fbb7c5d2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50815 (GCVE-0-2022-50815)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:08 – Updated: 2026-05-11 19:25

Title

ext2: Add sanity checks for group and filesystem size

Summary

In the Linux kernel, the following vulnerability has been resolved: ext2: Add sanity checks for group and filesystem size Add sanity check that filesystem size does not exceed the underlying device size and that group size is big enough so that metadata can fit into it. This avoid trying to mount some crafted filesystems with extremely large group counts.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6637 records in the last 180 days details

References

3 references

URL	Tags
https://git.kernel.org/stable/c/40ff52527daec00cf…
https://git.kernel.org/stable/c/32144007976399807…
https://git.kernel.org/stable/c/d766f2d1e3e3bd440…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 40ff52527daec00cf1530c17a95636916ddd3b38 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 321440079763998076b75e0c802524e2218a7d97 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d766f2d1e3e3bd44024a7f971ffcf8b8fbb7c5d2 (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.19.17 , ≤ 5.19.* (semver) Unaffected: 6.0.3 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext2/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "40ff52527daec00cf1530c17a95636916ddd3b38",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "321440079763998076b75e0c802524e2218a7d97",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "d766f2d1e3e3bd44024a7f971ffcf8b8fbb7c5d2",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext2/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.17",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next2: Add sanity checks for group and filesystem size\n\nAdd sanity check that filesystem size does not exceed the underlying\ndevice size and that group size is big enough so that metadata can fit\ninto it. This avoid trying to mount some crafted filesystems with\nextremely large group counts."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:25:39.257Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/40ff52527daec00cf1530c17a95636916ddd3b38"
        },
        {
          "url": "https://git.kernel.org/stable/c/321440079763998076b75e0c802524e2218a7d97"
        },
        {
          "url": "https://git.kernel.org/stable/c/d766f2d1e3e3bd44024a7f971ffcf8b8fbb7c5d2"
        }
      ],
      "title": "ext2: Add sanity checks for group and filesystem size",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50815",
    "datePublished": "2025-12-30T12:08:31.554Z",
    "dateReserved": "2025-12-30T12:06:07.130Z",
    "dateUpdated": "2026-05-11T19:25:39.257Z",
    "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.

Vulnerability timeline

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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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