Vulnerability-Lookup

GHSA-QGQF-CWG2-72JG

Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31

Details

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

smb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger()

See the procedure below:

ksmbd_launch_ksmbd_durable_scavenger durable_scavenger_running = true server_conf.dh_task = kthread_run() // fail, dh_task is an ERR_PTR()

server_ctrl_handle_reset ksmbd_stop_durable_scavenger kthread_stop(server_conf.dh_task) // invalid pointer

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90165"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:09Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger()\n\nSee the procedure below:\n\n  ksmbd_launch_ksmbd_durable_scavenger\n    durable_scavenger_running = true\n    server_conf.dh_task = kthread_run() // fail, dh_task is an ERR_PTR()\n\n  server_ctrl_handle_reset\n    ksmbd_stop_durable_scavenger\n    kthread_stop(server_conf.dh_task) // invalid pointer",
  "id": "GHSA-qgqf-cwg2-72jg",
  "modified": "2026-09-17T18:31:53Z",
  "published": "2026-09-17T18:31:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90165"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f8651f6bb52159c9e23993c77a2b51b9505ad64"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2eb72b4d53bb9d8d6c00f3f794eaccb4b1ce5ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af9cb997d13a17029a0d3863e33f4c837e27a8ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2d78c199dfd983638662ace0612d4fade3dbea1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bef46b604732d83f8da29f782868de4d25bf972c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-90165 (GCVE-0-2026-90165)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:06 – Updated: 2026-09-17 16:06

Title

smb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger()

Summary

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger() See the procedure below: ksmbd_launch_ksmbd_durable_scavenger durable_scavenger_running = true server_conf.dh_task = kthread_run() // fail, dh_task is an ERR_PTR() server_ctrl_handle_reset ksmbd_stop_durable_scavenger kthread_stop(server_conf.dh_task) // invalid pointer

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

5 references

URL	Tags
https://git.kernel.org/stable/c/3f8651f6bb52159c9…
https://git.kernel.org/stable/c/af9cb997d13a17029…
https://git.kernel.org/stable/c/b2d78c199dfd98363…
https://git.kernel.org/stable/c/a2eb72b4d53bb9d8d…
https://git.kernel.org/stable/c/bef46b604732d83f8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7f0cb478703cbeaddfe5c9101c5c73cd975d1073 , < 3f8651f6bb52159c9e23993c77a2b51b9505ad64 (git) Affected: d484d621d40f4a8b8959008802d79bef3609641b , < af9cb997d13a17029a0d3863e33f4c837e27a8ae (git) Affected: d484d621d40f4a8b8959008802d79bef3609641b , < b2d78c199dfd983638662ace0612d4fade3dbea1 (git) Affected: d484d621d40f4a8b8959008802d79bef3609641b , < a2eb72b4d53bb9d8d6c00f3f794eaccb4b1ce5ed (git) Affected: d484d621d40f4a8b8959008802d79bef3609641b , < bef46b604732d83f8da29f782868de4d25bf972c (git) Affected: 6.6.142 , < 6.6.157 (semver)
Linux	Linux	Affected: 6.11 Unaffected: 0 , < 6.11 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/vfs_cache.c"
          ],
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            },
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              "versionType": "semver"
            }
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          "versions": [
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              "status": "affected",
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              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger()\n\nSee the procedure below:\n\n  ksmbd_launch_ksmbd_durable_scavenger\n    durable_scavenger_running = true\n    server_conf.dh_task = kthread_run() // fail, dh_task is an ERR_PTR()\n\n  server_ctrl_handle_reset\n    ksmbd_stop_durable_scavenger\n    kthread_stop(server_conf.dh_task) // invalid pointer"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:06:55.196Z",
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        "shortName": "Linux"
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      "title": "smb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger()",
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    "datePublished": "2026-09-17T16:06:55.196Z",
    "dateReserved": "2026-09-11T19:38:34.790Z",
    "dateUpdated": "2026-09-17T16:06:55.196Z",
    "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.

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-QGQF-CWG2-72JG

CVE-2026-90165 (GCVE-0-2026-90165)

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