Vulnerability-Lookup

GHSA-7W6X-49RW-4C9G

Vulnerability from github – Published: 2026-10-18 18:32 – Updated: 2026-10-18 18:32

Details

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

thunderbolt: Tear down inactive DP tunnels when the domain is stopped

tb_stop() only tears down DMA tunnels so a DP tunnel that is still waiting for dprx_work to complete keeps that work queued while the routers are removed and the control channel is stopped. The work only stops once the DPRX timeout has passed and because it requeues itself until then the flush_workqueue() in tb_domain_remove() won't wait for its final run. The callback then runs against a domain that is already torn down. A reference to that domain is kept so the completion waiting for that domain to disappear in unbind will block until the timeout is eventually reached.

Tear down DP tunnels that are not active yet as well which also cancels that work. Tunnels for displays that are already alive are untouched and keep working.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98691"
  ],
  "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: Tear down inactive DP tunnels when the domain is stopped\n\ntb_stop() only tears down DMA tunnels so a DP tunnel that is still\nwaiting for dprx_work to complete keeps that work queued while the\nrouters are removed and the control channel is stopped. The work only\nstops once the DPRX timeout has passed and because it requeues itself\nuntil then the flush_workqueue() in tb_domain_remove() won\u0027t wait for its\nfinal run. The callback then runs against a domain that is already torn\ndown. A reference to that domain is kept so the completion waiting for\nthat domain to disappear in unbind will block until the timeout is\neventually reached.\n\nTear down DP tunnels that are not active yet as well which also cancels\nthat work. Tunnels for displays that are already alive are untouched and\nkeep working.",
  "id": "GHSA-7w6x-49rw-4c9g",
  "modified": "2026-10-18T18:32:00Z",
  "published": "2026-10-18T18:32:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98691"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b457c6733f73421a3fb03786f13d67c618b5119"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34a6e27c954e5bfc29fead17867c7155d54b6481"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98691 (GCVE-0-2026-98691)

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

Title

thunderbolt: Tear down inactive DP tunnels when the domain is stopped

Summary

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Tear down inactive DP tunnels when the domain is stopped tb_stop() only tears down DMA tunnels so a DP tunnel that is still waiting for dprx_work to complete keeps that work queued while the routers are removed and the control channel is stopped. The work only stops once the DPRX timeout has passed and because it requeues itself until then the flush_workqueue() in tb_domain_remove() won't wait for its final run. The callback then runs against a domain that is already torn down. A reference to that domain is kept so the completion waiting for that domain to disappear in unbind will block until the timeout is eventually reached. Tear down DP tunnels that are not active yet as well which also cancels that work. Tunnels for displays that are already alive are untouched and keep working.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6847 records in the last 180 days details

References

3 references

URL	Tags
https://git.kernel.org/stable/c/34a6e27c954e5bfc2…
https://git.kernel.org/stable/c/cbd2abb85ea32cafd…
https://git.kernel.org/stable/c/0b457c6733f73421a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d6d458d42e1e1544a18f37f1d5c840e00d5261b9 , < 34a6e27c954e5bfc29fead17867c7155d54b6481 (git) Affected: d6d458d42e1e1544a18f37f1d5c840e00d5261b9 , < cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa (git) Affected: d6d458d42e1e1544a18f37f1d5c840e00d5261b9 , < 0b457c6733f73421a3fb03786f13d67c618b5119 (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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/thunderbolt/tb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
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              "versionType": "git"
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            {
              "lessThan": "cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa",
              "status": "affected",
              "version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9",
              "versionType": "git"
            },
            {
              "lessThan": "0b457c6733f73421a3fb03786f13d67c618b5119",
              "status": "affected",
              "version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9",
              "versionType": "git"
            }
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
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              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.2.10",
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            },
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
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      "cpeApplicability": [
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              "cpeMatch": [
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                  "vulnerable": true
                }
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Tear down inactive DP tunnels when the domain is stopped\n\ntb_stop() only tears down DMA tunnels so a DP tunnel that is still\nwaiting for dprx_work to complete keeps that work queued while the\nrouters are removed and the control channel is stopped. The work only\nstops once the DPRX timeout has passed and because it requeues itself\nuntil then the flush_workqueue() in tb_domain_remove() won\u0027t wait for its\nfinal run. The callback then runs against a domain that is already torn\ndown. A reference to that domain is kept so the completion waiting for\nthat domain to disappear in unbind will block until the timeout is\neventually reached.\n\nTear down DP tunnels that are not active yet as well which also cancels\nthat work. Tunnels for displays that are already alive are untouched and\nkeep working."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:24:01.186Z",
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      "title": "thunderbolt: Tear down inactive DP tunnels when the domain is stopped",
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    "datePublished": "2026-10-18T15:46:15.299Z",
    "dateReserved": "2026-09-25T10:25:14.364Z",
    "dateUpdated": "2026-10-19T09:24:01.186Z",
    "state": "PUBLISHED"
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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.

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