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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00025.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
4469315439827290923fce4f3f672599cabeb366 affected < 21989cb5034c835b212385a2afadf279d8069da0
4469315439827290923fce4f3f672599cabeb366 affected < a4bd1caf591faeae44cb10b6517e7dacb5139bda
4469315439827290923fce4f3f672599cabeb366 affected < f98b191f78124405294481dea85f8a22a3eb0a59
4469315439827290923fce4f3f672599cabeb366 affected < 0dc76205549b4c25705e54345f211b9f66e018a0
Linux Linux affected
Version Status Constraints
6.5 affected —
0 unaffected < 6.5
6.12.63 unaffected ≤ 6.12.*
6.17.13 unaffected ≤ 6.17.*
6.18.2 unaffected ≤ 6.18.*
6.19 unaffected ≤ *

No data.

No data.

No data.

Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0dc76205549b4c25705e54345f211b9f66e018a0 cve-icon cve-icon
https://git.kernel.org/stable/c/21989cb5034c835b212385a2afadf279d8069da0 cve-icon cve-icon
https://git.kernel.org/stable/c/a4bd1caf591faeae44cb10b6517e7dacb5139bda cve-icon cve-icon
https://git.kernel.org/stable/c/f98b191f78124405294481dea85f8a22a3eb0a59 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025122402-CVE-2025-68374-560c@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-68374 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-68374 cve-icon
History

Thu, 25 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Wed, 24 Dec 2025 10:45:00 +0000

Type Values Removed Values Added
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.
Title md: fix rcu protection in md_wakeup_thread
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-02-09T08:32:12.034Z

Reserved: 2025-12-16T14:48:05.310Z

Link: CVE-2025-68374

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-24T11:16:00.993

Modified: 2025-12-29T15:58:34.503

Link: CVE-2025-68374

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-24T00:00:00Z

Links: CVE-2025-68374 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.