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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-98690

thunderbolt: Fix domain reference leak when DPRX read is canceledCVE-2026-98690

Answer in brief

CVE-2026-98690 records a Unknown severity vulnerability in thunderbolt: Fix domain reference leak when DPRX read is canceled. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 18, 2026Updated Oct 19, 2026Source checked Oct 25, 2026First seen by HOL Oct 18, 2026Material review Oct 19, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=d6d458d42e1e1544a18f37f1d5c840e00d5261b9 <2f5893172fc6153f5f1ef34014ddbfcbf1f47f29 || >=d6d458d42e1e1544a18f37f1d5c840e00d5261b9 <7739b02129b2248f9a8054cfda924fa253f66a88 || >=d6d458d42e1e1544a18f37f1d5c840e00d5261b9 <1fd1f67c94d30889377bba774f032ec15e8b92992f5893172fc6153f5f1ef34014ddbfcbf1f47f29, 7739b02129b2248f9a8054cfda924fa253f66a88, 1fd1f67c94d30889377bba774f032ec15e8b9299
Linux/Linuxgeneric6.14Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 2f5893172fc6153f5f1ef34014ddbfcbf1f47f29 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  2. Source modified

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  3. First seen by HOL

    Oct 18, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 25, 2026
References
3 linked sources
Open source record