Vulnerability-Lookup

GHSA-XP37-P5RQ-3C53

Vulnerability from github – Published: 2025-07-04 15:31 – Updated: 2025-11-18 18:32

Details

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

smb: client: add NULL check in automount_fullpath

page is checked for null in __build_path_from_dentry_optional_prefix when tcon->origin_fullpath is not set. However, the check is missing when it is set. Add a check to prevent a potential NULL pointer dereference.

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-2025-38208"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-04T14:15:28Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: add NULL check in automount_fullpath\n\npage is checked for null in __build_path_from_dentry_optional_prefix\nwhen tcon-\u003eorigin_fullpath is not set. However, the check is missing when\nit is set.\nAdd a check to prevent a potential NULL pointer dereference.",
  "id": "GHSA-xp37-p5rq-3c53",
  "modified": "2025-11-18T18:32:47Z",
  "published": "2025-07-04T15:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38208"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/37166d63e42c34846a16001950ecec96229a8d17"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9e916fa5c7d0ec2256aa44aa24ddd92f529ce35"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cce8e71ca1f7ad9045707f0d22490c1e9ed1df6c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1e7a277a1736e12cc4bd6d93b8a5c439b8ca20c"
    }
  ],
  "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-2025-38208 (GCVE-0-2025-38208)

Vulnerability from cvelistv5 – Published: 2025-07-04 13:37 – Updated: 2026-05-23 15:59

Title

smb: client: add NULL check in automount_fullpath

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: add NULL check in automount_fullpath page is checked for null in __build_path_from_dentry_optional_prefix when tcon->origin_fullpath is not set. However, the check is missing when it is set. Add a check to prevent a potential NULL pointer dereference.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/37166d63e42c34846…
https://git.kernel.org/stable/c/a9e916fa5c7d0ec22…
https://git.kernel.org/stable/c/cce8e71ca1f7ad904…
https://git.kernel.org/stable/c/f1e7a277a1736e12c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d5a863a153e90996ab2aef6b9e08d509f4d5662b , < 37166d63e42c34846a16001950ecec96229a8d17 (git) Affected: d5a863a153e90996ab2aef6b9e08d509f4d5662b , < a9e916fa5c7d0ec2256aa44aa24ddd92f529ce35 (git) Affected: d5a863a153e90996ab2aef6b9e08d509f4d5662b , < cce8e71ca1f7ad9045707f0d22490c1e9ed1df6c (git) Affected: d5a863a153e90996ab2aef6b9e08d509f4d5662b , < f1e7a277a1736e12cc4bd6d93b8a5c439b8ca20c (git) Affected: e91802036b3e6e6e803a17ddf5783a6354fe5380 (git) Affected: 6.2.13 , < 6.3 (semver)
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (semver) Unaffected: 6.6.95 , ≤ 6.6.* (semver) Unaffected: 6.12.35 , ≤ 6.12.* (semver) Unaffected: 6.15.4 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/namespace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "37166d63e42c34846a16001950ecec96229a8d17",
              "status": "affected",
              "version": "d5a863a153e90996ab2aef6b9e08d509f4d5662b",
              "versionType": "git"
            },
            {
              "lessThan": "a9e916fa5c7d0ec2256aa44aa24ddd92f529ce35",
              "status": "affected",
              "version": "d5a863a153e90996ab2aef6b9e08d509f4d5662b",
              "versionType": "git"
            },
            {
              "lessThan": "cce8e71ca1f7ad9045707f0d22490c1e9ed1df6c",
              "status": "affected",
              "version": "d5a863a153e90996ab2aef6b9e08d509f4d5662b",
              "versionType": "git"
            },
            {
              "lessThan": "f1e7a277a1736e12cc4bd6d93b8a5c439b8ca20c",
              "status": "affected",
              "version": "d5a863a153e90996ab2aef6b9e08d509f4d5662b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e91802036b3e6e6e803a17ddf5783a6354fe5380",
              "versionType": "git"
            },
            {
              "lessThan": "6.3",
              "status": "affected",
              "version": "6.2.13",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/namespace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.95",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.95",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.35",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.4",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.3",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.2.13",
                  "vulnerable": true
                }
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              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: add NULL check in automount_fullpath\n\npage is checked for null in __build_path_from_dentry_optional_prefix\nwhen tcon-\u003eorigin_fullpath is not set. However, the check is missing when\nit is set.\nAdd a check to prevent a potential NULL pointer dereference."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:59:12.615Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        },
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          "url": "https://git.kernel.org/stable/c/cce8e71ca1f7ad9045707f0d22490c1e9ed1df6c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1e7a277a1736e12cc4bd6d93b8a5c439b8ca20c"
        }
      ],
      "title": "smb: client: add NULL check in automount_fullpath",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38208",
    "datePublished": "2025-07-04T13:37:28.226Z",
    "dateReserved": "2025-04-16T04:51:23.994Z",
    "dateUpdated": "2026-05-23T15:59:12.615Z",
    "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.

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

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.