Vulnerability-Lookup

GHSA-8W2V-RQC9-M6RW

Vulnerability from github – Published: 2025-09-15 15:31 – Updated: 2025-12-04 15:30

Details

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

erofs: fix order >= MAX_ORDER warning due to crafted negative i_size

As syzbot reported [1], the root cause is that i_size field is a signed type, and negative i_size is also less than EROFS_BLKSIZ. As a consequence, it's handled as fast symlink unexpectedly.

Let's fall back to the generic path to deal with such unusual i_size.

[1] https://lore.kernel.org/r/000000000000ac8efa05e7feaa1f@google.com

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-2022-50313"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T15:15:43Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix order \u003e= MAX_ORDER warning due to crafted negative i_size\n\nAs syzbot reported [1], the root cause is that i_size field is a\nsigned type, and negative i_size is also less than EROFS_BLKSIZ.\nAs a consequence, it\u0027s handled as fast symlink unexpectedly.\n\nLet\u0027s fall back to the generic path to deal with such unusual i_size.\n\n[1] https://lore.kernel.org/r/000000000000ac8efa05e7feaa1f@google.com",
  "id": "GHSA-8w2v-rqc9-m6rw",
  "modified": "2025-12-04T15:30:30Z",
  "published": "2025-09-15T15:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50313"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ab621fcdff1a58ff4de51a8590fa92a0ecd34be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17a0cdbd7b0cf0fc0d7ca4187a67f8f1c18c291f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1dd73601a1cba37a0ed5f89a8662c90191df5873"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6235fb899b25fd287d5e42635ff82196395708cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/acc2f40b980c61a9178b72cdedd150b829064997"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6c8330f5b0f22149957a2e4977fd0f01a9db7cd"
    }
  ],
  "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-2022-50313 (GCVE-0-2022-50313)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:46 – Updated: 2026-05-11 19:16

Title

erofs: fix order >= MAX_ORDER warning due to crafted negative i_size

Summary

In the Linux kernel, the following vulnerability has been resolved: erofs: fix order >= MAX_ORDER warning due to crafted negative i_size As syzbot reported [1], the root cause is that i_size field is a signed type, and negative i_size is also less than EROFS_BLKSIZ. As a consequence, it's handled as fast symlink unexpectedly. Let's fall back to the generic path to deal with such unusual i_size. [1] https://lore.kernel.org/r/000000000000ac8efa05e7feaa1f@google.com

Severity

No CVSS data available.

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/17a0cdbd7b0cf0fc0…
https://git.kernel.org/stable/c/0ab621fcdff1a58ff…
https://git.kernel.org/stable/c/acc2f40b980c61a91…
https://git.kernel.org/stable/c/b6c8330f5b0f22149…
https://git.kernel.org/stable/c/6235fb899b25fd287…
https://git.kernel.org/stable/c/1dd73601a1cba37a0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 431339ba90423a038914c6032bfd71f0ba7ef2f2 , < 17a0cdbd7b0cf0fc0d7ca4187a67f8f1c18c291f (git) Affected: 431339ba90423a038914c6032bfd71f0ba7ef2f2 , < 0ab621fcdff1a58ff4de51a8590fa92a0ecd34be (git) Affected: 431339ba90423a038914c6032bfd71f0ba7ef2f2 , < acc2f40b980c61a9178b72cdedd150b829064997 (git) Affected: 431339ba90423a038914c6032bfd71f0ba7ef2f2 , < b6c8330f5b0f22149957a2e4977fd0f01a9db7cd (git) Affected: 431339ba90423a038914c6032bfd71f0ba7ef2f2 , < 6235fb899b25fd287d5e42635ff82196395708cc (git) Affected: 431339ba90423a038914c6032bfd71f0ba7ef2f2 , < 1dd73601a1cba37a0ed5f89a8662c90191df5873 (git)
Linux	Linux	Affected: 4.19 Unaffected: 0 , < 4.19 (semver) Unaffected: 5.4.289 , ≤ 5.4.* (semver) Unaffected: 5.10.233 , ≤ 5.10.* (semver) Unaffected: 5.15.82 , ≤ 5.15.* (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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{
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              "status": "unaffected",
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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.

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