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GHSA-WQQH-3G59-38Q4

Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-18 18:31

Details

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

thunderbolt: Fix domain reference leak when DPRX read is canceled

tb_tunnel_one_dp() takes a domain reference which is only dropped once tb_dp_tunnel_active() has run on the work queue. If that work is cancelled that reference is leaked. Since commit f5cc545f5969 ("thunderbolt: Wait for tb_domain_release() to complete when driver is removed") instead of just leaking memory this now also blocks in the completion wait forever when unbinding the driver.

This can be triggered whenever a DP tunnel is torn down before the DPRX read has completed, e.g. by unplugging within the timeout, and then unbinding the driver.

That reference only exists to keep the domain around while the DPRX work is scheduled so let the work itself own it: take it in tb_dp_dprx_start() and drop it in both places that end the work. Get/put are then paired inside the same file and it doesn't matter anymore if the callback ever runs.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98690"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:17:22Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Fix domain reference leak when DPRX read is canceled\n\ntb_tunnel_one_dp() takes a domain reference which is only dropped once\ntb_dp_tunnel_active() has run on the work queue. If that work is\ncancelled that reference is leaked. Since\ncommit f5cc545f5969 (\"thunderbolt: Wait for tb_domain_release() to\ncomplete when driver is removed\") instead of just leaking memory this\nnow also blocks in the completion wait forever when unbinding the\ndriver.\n\nThis can be triggered whenever a DP tunnel is torn down before the DPRX\nread has completed, e.g. by unplugging within the timeout, and then\nunbinding the driver.\n\nThat reference only exists to keep the domain around while the DPRX work\nis scheduled so let the work itself own it: take it in tb_dp_dprx_start()\nand drop it in both places that end the work. Get/put are then paired\ninside the same file and it doesn\u0027t matter anymore if the callback ever\nruns.",
  "id": "GHSA-wqqh-3g59-38q4",
  "modified": "2026-10-18T18:31:59Z",
  "published": "2026-10-18T18:31:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98690"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1fd1f67c94d30889377bba774f032ec15e8b9299"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f5893172fc6153f5f1ef34014ddbfcbf1f47f29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7739b02129b2248f9a8054cfda924fa253f66a88"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98690 (GCVE-0-2026-98690)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:46 – Updated: 2026-10-19 09:24

Title

thunderbolt: Fix domain reference leak when DPRX read is canceled

Summary

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Fix domain reference leak when DPRX read is canceled tb_tunnel_one_dp() takes a domain reference which is only dropped once tb_dp_tunnel_active() has run on the work queue. If that work is cancelled that reference is leaked. Since commit f5cc545f5969 ("thunderbolt: Wait for tb_domain_release() to complete when driver is removed") instead of just leaking memory this now also blocks in the completion wait forever when unbinding the driver. This can be triggered whenever a DP tunnel is torn down before the DPRX read has completed, e.g. by unplugging within the timeout, and then unbinding the driver. That reference only exists to keep the domain around while the DPRX work is scheduled so let the work itself own it: take it in tb_dp_dprx_start() and drop it in both places that end the work. Get/put are then paired inside the same file and it doesn't matter anymore if the callback ever runs.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6820 records in the last 180 days details

References

3 references

URL	Tags
https://git.kernel.org/stable/c/2f5893172fc6153f5…
https://git.kernel.org/stable/c/7739b02129b2248f9…
https://git.kernel.org/stable/c/1fd1f67c94d308893…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d6d458d42e1e1544a18f37f1d5c840e00d5261b9 , < 2f5893172fc6153f5f1ef34014ddbfcbf1f47f29 (git) Affected: d6d458d42e1e1544a18f37f1d5c840e00d5261b9 , < 7739b02129b2248f9a8054cfda924fa253f66a88 (git) Affected: d6d458d42e1e1544a18f37f1d5c840e00d5261b9 , < 1fd1f67c94d30889377bba774f032ec15e8b9299 (git)
Linux	Linux	Affected: 6.14 Unaffected: 0 , < 6.14 (semver) Unaffected: 6.18.56 , ≤ 6.18.* (semver) Unaffected: 7.2.10 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/thunderbolt/tb.c",
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          ],
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          "versions": [
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              "versionType": "git"
            },
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    "dateReserved": "2026-09-25T10:25:14.364Z",
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