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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2025-68374

md: fix rcu protection in md_wakeup_threadCVE-2025-68374

Answer in brief

CVE-2025-68374 records a Unknown severity vulnerability in md: fix rcu protection in md_wakeup_thread. 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 Dec 24, 2025Updated Oct 21, 2026Source checked Oct 21, 2026First seen by HOL Oct 20, 2026Material review Oct 21, 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>=4469315439827290923fce4f3f672599cabeb366 <dc6d1249ee35c1c76700b4b96281daeb7637bce1 || >=4469315439827290923fce4f3f672599cabeb366 <21989cb5034c835b212385a2afadf279d8069da0 || >=4469315439827290923fce4f3f672599cabeb366 <a4bd1caf591faeae44cb10b6517e7dacb5139bda || >=4469315439827290923fce4f3f672599cabeb366 <f98b191f78124405294481dea85f8a22a3eb0a59 || >=4469315439827290923fce4f3f672599cabeb366 <0dc76205549b4c25705e54345f211b9f66e018a0dc6d1249ee35c1c76700b4b96281daeb7637bce1, 21989cb5034c835b212385a2afadf279d8069da0, a4bd1caf591faeae44cb10b6517e7dacb5139bda, f98b191f78124405294481dea85f8a22a3eb0a59, 0dc76205549b4c25705e54345f211b9f66e018a0
Linux/Linuxgeneric6.5Not 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 dc6d1249ee35c1c76700b4b96281daeb7637bce1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Dec 24, 2025

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 20, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • 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: md: fix rcu protection in md_wakeup_thread We attempted to use RCU to protect the pointer 'thread', but directly passed the value when calling md_wakeup_thread(). This means that the RCU pointer has been acquired before rcu_read_lock(), which renders rcu_read_lock() ineffective and could lead to a use-after-free.

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 21, 2026
References
5 linked sources
Open source record