Vulnerability-Lookup

GHSA-6FCQ-VJ78-W895

Vulnerability from github – Published: 2025-10-07 18:31 – Updated: 2026-02-06 18:30

Details

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

ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}

If the filename casefolding fails, we'll be leaking memory from the fscrypt_name struct, namely from the 'crypto_buf.name' member.

Make sure we free it in the error path on both ext4_fname_setup_filename() and ext4_fname_prepare_lookup() functions.

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-2023-53662"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-07T16:15:49Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}\n\nIf the filename casefolding fails, we\u0027ll be leaking memory from the\nfscrypt_name struct, namely from the \u0027crypto_buf.name\u0027 member.\n\nMake sure we free it in the error path on both ext4_fname_setup_filename()\nand ext4_fname_prepare_lookup() functions.",
  "id": "GHSA-6fcq-vj78-w895",
  "modified": "2026-02-06T18:30:27Z",
  "published": "2025-10-07T18:31:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53662"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1fb3f1bbfdb511034b0360dbeb0f6a8424ed2a5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36daf050be3f6f067631dc52054de2d3b7cc849f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ca4b085f430f3774c3838b3da569ceccd6a0177"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98fc9c2cc45cfcb56961a73de3ec69b474063fc0"
    }
  ],
  "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-2023-53662 (GCVE-0-2023-53662)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:21 – Updated: 2026-02-06 16:30

Title

ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup} If the filename casefolding fails, we'll be leaking memory from the fscrypt_name struct, namely from the 'crypto_buf.name' member. Make sure we free it in the error path on both ext4_fname_setup_filename() and ext4_fname_prepare_lookup() functions.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/98fc9c2cc45cfcb56…
	https://git.kernel.org/stable/c/1fb3f1bbfdb511034…
	https://git.kernel.org/stable/c/36daf050be3f6f067…
	https://git.kernel.org/stable/c/7ca4b085f430f3774…

Impacted products

Vendor

Product

Version

Linux

Affected: 1ae98e295fa2577fb5e492200c58d10230e00e99 , < 98fc9c2cc45cfcb56961a73de3ec69b474063fc0 (git)
Affected: 1ae98e295fa2577fb5e492200c58d10230e00e99 , < 1fb3f1bbfdb511034b0360dbeb0f6a8424ed2a5c (git)
Affected: 1ae98e295fa2577fb5e492200c58d10230e00e99 , < 36daf050be3f6f067631dc52054de2d3b7cc849f (git)
Affected: 1ae98e295fa2577fb5e492200c58d10230e00e99 , < 7ca4b085f430f3774c3838b3da569ceccd6a0177 (git)

Linux

Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.54 , ≤ 6.1.* (semver)
Unaffected: 6.5.4 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/crypto.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "98fc9c2cc45cfcb56961a73de3ec69b474063fc0",
              "status": "affected",
              "version": "1ae98e295fa2577fb5e492200c58d10230e00e99",
              "versionType": "git"
            },
            {
              "lessThan": "1fb3f1bbfdb511034b0360dbeb0f6a8424ed2a5c",
              "status": "affected",
              "version": "1ae98e295fa2577fb5e492200c58d10230e00e99",
              "versionType": "git"
            },
            {
              "lessThan": "36daf050be3f6f067631dc52054de2d3b7cc849f",
              "status": "affected",
              "version": "1ae98e295fa2577fb5e492200c58d10230e00e99",
              "versionType": "git"
            },
            {
              "lessThan": "7ca4b085f430f3774c3838b3da569ceccd6a0177",
              "status": "affected",
              "version": "1ae98e295fa2577fb5e492200c58d10230e00e99",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/crypto.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.199",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.199",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.54",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5.4",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}\n\nIf the filename casefolding fails, we\u0027ll be leaking memory from the\nfscrypt_name struct, namely from the \u0027crypto_buf.name\u0027 member.\n\nMake sure we free it in the error path on both ext4_fname_setup_filename()\nand ext4_fname_prepare_lookup() functions."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-06T16:30:45.715Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/98fc9c2cc45cfcb56961a73de3ec69b474063fc0"
        },
        {
          "url": "https://git.kernel.org/stable/c/1fb3f1bbfdb511034b0360dbeb0f6a8424ed2a5c"
        },
        {
          "url": "https://git.kernel.org/stable/c/36daf050be3f6f067631dc52054de2d3b7cc849f"
        },
        {
          "url": "https://git.kernel.org/stable/c/7ca4b085f430f3774c3838b3da569ceccd6a0177"
        }
      ],
      "title": "ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53662",
    "datePublished": "2025-10-07T15:21:21.703Z",
    "dateReserved": "2025-10-07T15:16:59.662Z",
    "dateUpdated": "2026-02-06T16:30:45.715Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-6FCQ-VJ78-W895

CVE-2023-53662 (GCVE-0-2023-53662)

Tags

Sightings

Nomenclature