Vulnerability-Lookup

GHSA-96W3-WXXM-9X2Q

Vulnerability from github – Published: 2025-10-01 12:30 – Updated: 2026-01-20 18:31

Details

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

ext4: improve error handling from ext4_dirhash()

The ext4_dirhash() will almost never fail, especially when the hash tree feature was first introduced. However, with the addition of support of encrypted, casefolded file names, that function can most certainly fail today.

So make sure the callers of ext4_dirhash() properly check for failures, and reflect the errors back up to their callers.

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53473"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-01T12:15:49Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: improve error handling from ext4_dirhash()\n\nThe ext4_dirhash() will *almost* never fail, especially when the hash\ntree feature was first introduced.  However, with the addition of\nsupport of encrypted, casefolded file names, that function can most\ncertainly fail today.\n\nSo make sure the callers of ext4_dirhash() properly check for\nfailures, and reflect the errors back up to their callers.",
  "id": "GHSA-96w3-wxxm-9x2q",
  "modified": "2026-01-20T18:31:51Z",
  "published": "2025-10-01T12:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53473"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70d579aefa652a06af97e013e3fbbabbe5a43553"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2531936118deb3f479c4fa1bcd787b74b8faa6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c1fae027da61fe8e7eb99f7244297e81bc0f1e43"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f68876aeef96ef8b708ab10b9cb47ce0a5adb424"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-53473 (GCVE-0-2023-53473)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:42 – Updated: 2026-10-15 21:41

Title

ext4: improve error handling from ext4_dirhash()

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: improve error handling from ext4_dirhash() The ext4_dirhash() will *almost* never fail, especially when the hash tree feature was first introduced. However, with the addition of support of encrypted, casefolded file names, that function can most certainly fail today. So make sure the callers of ext4_dirhash() properly check for failures, and reflect the errors back up to their callers.

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-15 21:34 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7018 records in the last 180 days details

References

5 references

URL	Tags
https://git.kernel.org/stable/c/b2531936118deb3f4…
https://git.kernel.org/stable/c/f68876aeef96ef8b7…
https://git.kernel.org/stable/c/70d579aefa652a06a…
https://git.kernel.org/stable/c/c1fae027da61fe8e7…
https://git.kernel.org/stable/c/4b3cb1d108bfc2aeb…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b886ee3e778ec2ad43e276fd378ab492cf6819b7 , < b2531936118deb3f479c4fa1bcd787b74b8faa6a (git) Affected: b886ee3e778ec2ad43e276fd378ab492cf6819b7 , < f68876aeef96ef8b708ab10b9cb47ce0a5adb424 (git) Affected: b886ee3e778ec2ad43e276fd378ab492cf6819b7 , < 70d579aefa652a06af97e013e3fbbabbe5a43553 (git) Affected: b886ee3e778ec2ad43e276fd378ab492cf6819b7 , < c1fae027da61fe8e7eb99f7244297e81bc0f1e43 (git) Affected: b886ee3e778ec2ad43e276fd378ab492cf6819b7 , < 4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786 (git)
Linux	Linux	Affected: 5.2 Unaffected: 0 , < 5.2 (semver) Unaffected: 5.15.112 , ≤ 5.15.* (semver) Unaffected: 6.1.29 , ≤ 6.1.* (semver) Unaffected: 6.2.16 , ≤ 6.2.* (semver) Unaffected: 6.3.3 , ≤ 6.3.* (semver) Unaffected: 6.4 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-53473",
                "options": [
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T21:34:36.698376Z",
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    "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.

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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.
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