md: fix rcu protection in md_wakeup_thread
Priority LOW 22Published · Updated
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 3 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.00214 11th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.6.160, 6.12.63, 6.17.13 +2Red Hat: 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.6.160, 6.12.63, 6.17.13, 6.18.2, 6.19
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68374
- 2026-10-03 Alias added: GHSA-56x5-2pg4-9qq2
- 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@dc6d1249ee35c1c76700b4b96281daeb7637bce1 · CNA
- 2026-10-21 1 new reference · CNA
References
Other 5
- https://git.kernel.org/stable/c/dc6d1249ee35c1c76700b4b96281daeb7637bce1
- https://git.kernel.org/stable/c/21989cb5034c835b212385a2afadf279d8069da0
- https://git.kernel.org/stable/c/a4bd1caf591faeae44cb10b6517e7dacb5139bda
- https://git.kernel.org/stable/c/f98b191f78124405294481dea85f8a22a3eb0a59
- https://git.kernel.org/stable/c/0dc76205549b4c25705e54345f211b9f66e018a0
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- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2025-68374 · CVE Program
- CVE-2025-68374 · NVD
- FIRST EPSS
- GHSA-56x5-2pg4-9qq2 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-68374 · Red Hat security data · CC BY 4.0
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