Vulnerability-Lookup

GHSA-J6H2-WR53-6VCG

Vulnerability from github – Published: 2026-02-18 18:30 – Updated: 2026-06-02 15:31

Details

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

smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()

On kthread_run() failure in ksmbd_tcp_new_connection(), the transport is freed via free_transport(), which does not decrement active_num_conn, leaking this counter.

Replace free_transport() with ksmbd_tcp_disconnect().

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-2026-23228"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-18T16:22:32Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()\n\nOn kthread_run() failure in ksmbd_tcp_new_connection(), the transport is\nfreed via free_transport(), which does not decrement active_num_conn,\nleaking this counter.\n\nReplace free_transport() with ksmbd_tcp_disconnect().",
  "id": "GHSA-j6h2-wr53-6vcg",
  "modified": "2026-06-02T15:31:53Z",
  "published": "2026-02-18T18:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23228"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/599271110c35f6b16e2e4e45b9fbd47ed378c982"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6dd2645cf080a75be31fa66063c7332b291f46f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77ffbcac4e569566d0092d5f22627dfc0896b553"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/787769c8cc50416af7b8b1a36e6bcd6aaa7680aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ddd69cd1338c6197e1b6b19cec60d99c8633e4f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/baf664fc90a6139a39a58333e4aaa390c10d45dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd25e0d809531a67e9dd53b19012d27d2b13425f"
    }
  ],
  "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-2026-23228 (GCVE-0-2026-23228)

Vulnerability from cvelistv5 – Published: 2026-02-18 14:53 – Updated: 2026-06-02 13:01

Title

smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection() On kthread_run() failure in ksmbd_tcp_new_connection(), the transport is freed via free_transport(), which does not decrement active_num_conn, leaking this counter. Replace free_transport() with ksmbd_tcp_disconnect().

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/6dd2645cf080a75be…
https://git.kernel.org/stable/c/7ddd69cd1338c6197…
https://git.kernel.org/stable/c/787769c8cc50416af…
https://git.kernel.org/stable/c/baf664fc90a6139a3…
https://git.kernel.org/stable/c/cd25e0d809531a67e…
https://git.kernel.org/stable/c/599271110c35f6b16…
https://git.kernel.org/stable/c/77ffbcac4e569566d…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version
Linux	Linux	Affected: 4210c3555db4b38bade92331b153e583261f05f9 , < 6dd2645cf080a75be31fa66063c7332b291f46f0 (git) Affected: d5d7847e57ac69fa99c18b363a34419bcdb5a281 , < 7ddd69cd1338c6197e1b6b19cec60d99c8633e4f (git) Affected: 0d0d4680db22eda1eea785c47bbf66a9b33a8b16 , < 787769c8cc50416af7b8b1a36e6bcd6aaa7680aa (git) Affected: 0d0d4680db22eda1eea785c47bbf66a9b33a8b16 , < baf664fc90a6139a39a58333e4aaa390c10d45dc (git) Affected: 0d0d4680db22eda1eea785c47bbf66a9b33a8b16 , < cd25e0d809531a67e9dd53b19012d27d2b13425f (git) Affected: 0d0d4680db22eda1eea785c47bbf66a9b33a8b16 , < 599271110c35f6b16e2e4e45b9fbd47ed378c982 (git) Affected: 0d0d4680db22eda1eea785c47bbf66a9b33a8b16 , < 77ffbcac4e569566d0092d5f22627dfc0896b553 (git) Affected: 5.15.91 , < 5.15.201 (semver) Affected: 6.1.9 , < 6.1.164 (semver)
Linux	Linux	Affected: 6.2 Unaffected: 0 , < 6.2 (semver) Unaffected: 5.15.201 , ≤ 5.15.* (semver) Unaffected: 6.1.164 , ≤ 6.1.* (semver) Unaffected: 6.6.125 , ≤ 6.6.* (semver) Unaffected: 6.12.72 , ≤ 6.12.* (semver) Unaffected: 6.18.11 , ≤ 6.18.* (semver) Unaffected: 6.19.1 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Siemens	RUGGEDCOM RST2428P	Affected: 0 , < V4.0 (custom)

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{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "RUGGEDCOM RST2428P",
            "vendor": "Siemens",
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        "providerMetadata": {
          "dateUpdated": "2026-06-02T13:01:03.442Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
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        },
        "references": [
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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.

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.
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GHSA-J6H2-WR53-6VCG

CVE-2026-23228 (GCVE-0-2026-23228)

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