Vulnerability-Lookup

GHSA-R3CX-WCP6-7G33

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-17 21:31

Details

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

kernfs: fix potential NULL dereference in __kernfs_remove

When lockdep is enabled, lockdep_assert_held_write would cause potential NULL pointer dereference.

Fix the following smatch warnings:

fs/kernfs/dir.c:1353 __kernfs_remove() warn: variable dereferenced before check 'kn' (see line 1346)

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-2022-50148"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:44Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nkernfs: fix potential NULL dereference in __kernfs_remove\n\nWhen lockdep is enabled, lockdep_assert_held_write would\ncause potential NULL pointer dereference.\n\nFix the following smatch warnings:\n\nfs/kernfs/dir.c:1353 __kernfs_remove() warn: variable dereferenced before check \u0027kn\u0027 (see line 1346)",
  "id": "GHSA-r3cx-wcp6-7g33",
  "modified": "2025-11-17T21:31:18Z",
  "published": "2025-06-18T12:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50148"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a9f35b8729c5bf13ea671c908c17ed74c48fc50"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72b5d5aef246a0387cefa23121dd90901c7a691a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b871986d9d3071f5082664ac274d93f08db257cd"
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  "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-2022-50148 (GCVE-0-2022-50148)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:03 – Updated: 2026-05-11 19:13

Title

kernfs: fix potential NULL dereference in __kernfs_remove

Summary

In the Linux kernel, the following vulnerability has been resolved: kernfs: fix potential NULL dereference in __kernfs_remove When lockdep is enabled, lockdep_assert_held_write would cause potential NULL pointer dereference. Fix the following smatch warnings: fs/kernfs/dir.c:1353 __kernfs_remove() warn: variable dereferenced before check 'kn' (see line 1346)

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/b871986d9d3071f50…
https://git.kernel.org/stable/c/4a9f35b8729c5bf13…
https://git.kernel.org/stable/c/72b5d5aef246a0387…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 393c3714081a53795bbff0e985d24146def6f57f , < b871986d9d3071f5082664ac274d93f08db257cd (git) Affected: 393c3714081a53795bbff0e985d24146def6f57f , < 4a9f35b8729c5bf13ea671c908c17ed74c48fc50 (git) Affected: 393c3714081a53795bbff0e985d24146def6f57f , < 72b5d5aef246a0387cefa23121dd90901c7a691a (git)
Linux	Linux	Affected: 5.17 Unaffected: 0 , < 5.17 (semver) Unaffected: 5.18.18 , ≤ 5.18.* (semver) Unaffected: 5.19.2 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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          "programFiles": [
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            },
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkernfs: fix potential NULL dereference in __kernfs_remove\n\nWhen lockdep is enabled, lockdep_assert_held_write would\ncause potential NULL pointer dereference.\n\nFix the following smatch warnings:\n\nfs/kernfs/dir.c:1353 __kernfs_remove() warn: variable dereferenced before check \u0027kn\u0027 (see line 1346)"
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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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