Vulnerability-Lookup

GHSA-X6QH-H8P9-5C4Q

Vulnerability from github – Published: 2026-09-25 15:31 – Updated: 2026-09-25 15:31

Details

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

smb/server: fix tree connection leak in smb2_tree_connect()

See the procedure below:

smb2_tree_connect ksmbd_tree_conn_connect xa_store(&sess->tree_conns, tree_conn->id, tree_conn) ksmbd_counter_inc(KSMBD_COUNTER_TREE_CONNS) ksmbd_share_tree_conn_inc(sc) ksmbd_iov_pin_rsp // fail status.ret = KSMBD_TREE_CONN_STATUS_NOMEM // do not disconnect tree_conn

Disconnect the new tree connection if ksmbd_iov_pin_rsp() fails.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98162"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T14:17:27Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix tree connection leak in smb2_tree_connect()\n\nSee the procedure below:\n\n  smb2_tree_connect\n    ksmbd_tree_conn_connect\n      xa_store(\u0026sess-\u003etree_conns, tree_conn-\u003eid, tree_conn)\n      ksmbd_counter_inc(KSMBD_COUNTER_TREE_CONNS)\n      ksmbd_share_tree_conn_inc(sc)\n    ksmbd_iov_pin_rsp // fail\n    status.ret = KSMBD_TREE_CONN_STATUS_NOMEM\n    // do not disconnect tree_conn\n\nDisconnect the new tree connection if ksmbd_iov_pin_rsp() fails.",
  "id": "GHSA-x6qh-h8p9-5c4q",
  "modified": "2026-09-25T15:31:49Z",
  "published": "2026-09-25T15:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98162"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39f2032096715daae5f6fd0f587ca7a474b019df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6c88e5e3a75f1e4a98ad4bc4037465ccd7925bc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98162 (GCVE-0-2026-98162)

Vulnerability from cvelistv5 – Published: 2026-09-25 13:06 – Updated: 2026-09-25 13:06

Title

smb/server: fix tree connection leak in smb2_tree_connect()

Summary

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix tree connection leak in smb2_tree_connect() See the procedure below: smb2_tree_connect ksmbd_tree_conn_connect xa_store(&sess->tree_conns, tree_conn->id, tree_conn) ksmbd_counter_inc(KSMBD_COUNTER_TREE_CONNS) ksmbd_share_tree_conn_inc(sc) ksmbd_iov_pin_rsp // fail status.ret = KSMBD_TREE_CONN_STATUS_NOMEM // do not disconnect tree_conn Disconnect the new tree connection if ksmbd_iov_pin_rsp() fails.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

2 references

URL	Tags
https://git.kernel.org/stable/c/a6c88e5e3a75f1e4a…
https://git.kernel.org/stable/c/39f2032096715daae…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d , < a6c88e5e3a75f1e4a98ad4bc4037465ccd7925bc (git) Affected: e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d , < 39f2032096715daae5f6fd0f587ca7a474b019df (git) Affected: f2283680a80571ca82d710bc6ecd8f8beac67d63 (git) Affected: 9f297df20d93411c0b4ddad7f88ba04a7cd36e77 (git) Affected: 5.15.145 , < 5.16 (semver) Affected: 6.1.71 , < 6.2 (semver)
Linux	Linux	Affected: 6.6 Unaffected: 0 , < 6.6 (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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              "version": "6.1.71",
              "versionType": "semver"
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          "programFiles": [
            "fs/smb/server/smb2pdu.c"
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix tree connection leak in smb2_tree_connect()\n\nSee the procedure below:\n\n  smb2_tree_connect\n    ksmbd_tree_conn_connect\n      xa_store(\u0026sess-\u003etree_conns, tree_conn-\u003eid, tree_conn)\n      ksmbd_counter_inc(KSMBD_COUNTER_TREE_CONNS)\n      ksmbd_share_tree_conn_inc(sc)\n    ksmbd_iov_pin_rsp // fail\n    status.ret = KSMBD_TREE_CONN_STATUS_NOMEM\n    // do not disconnect tree_conn\n\nDisconnect the new tree connection if ksmbd_iov_pin_rsp() fails."
        }
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    "datePublished": "2026-09-25T13:06:51.778Z",
    "dateReserved": "2026-09-25T10:25:14.321Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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-X6QH-H8P9-5C4Q

CVE-2026-98162 (GCVE-0-2026-98162)

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