md/raid1,raid10: fix deadlock in read error recovery path
Key facts
- Attack vector
- —
- 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: 4 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/raid1,raid10: fix deadlock in read error recovery path raid1d and raid10d may resubmit a split md cloned bio while handling a read error. In this case, resubmitting the bio can lead to a deadlock if the array is suspended before md_handle_request() acquires an active_io reference via percpu_ref_tryget_live(). Since the cloned bio already holds an active_io reference, trying to acquire another reference via percpu_ref_tryget_live() can lead to a deadlock while the array is suspended. Fix this by using percpu_ref_get() for md cloned bios.
Why it matters now
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, 6.12.114, 6.18.57, 7.1.5, 7.2
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 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-74375
- 2026-10-03 Alias added: GHSA-xhm4-9f9x-w7xp
- 2026-10-16 Fix available: Linux/[email protected], Linux/Linux@ea2d1d2ebf60b70b602a92261a567d5fc4575eab · CNA
- 2026-10-16 1 new reference · CNA
- 2026-10-21 Fix available: Linux/Linux@0889242775340e2c5b69b1590bd71335dd4fdeda, Linux/[email protected], Linux/[email protected] +1 · CNA
- 2026-10-21 2 new references · CNA
- 2026-10-29 Affected versions changed · Red Hat
References
Other 5
- https://git.kernel.org/stable/c/923a6f3172a362d6b2ff12386e376e0e47188f78
- https://git.kernel.org/stable/c/0889242775340e2c5b69b1590bd71335dd4fdeda
- https://git.kernel.org/stable/c/ea2d1d2ebf60b70b602a92261a567d5fc4575eab
- https://git.kernel.org/stable/c/38777f014c37972868f1733a651c85288bb8a757
- https://git.kernel.org/stable/c/7b15c24f805339a585cfe7d72f446b7e88b9bcc0
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Sources
- CVE-2026-74375 · CVE Program
- CVE-2026-74375 · NVD
- FIRST EPSS
- GHSA-xhm4-9f9x-w7xp · GitHub Advisory Database · CC BY 4.0
- CVE-2026-74375 · Red Hat security data · CC BY 4.0
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