RDMA/ipoib: Drain RCU callbacks during module teardown
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 7 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: RDMA/ipoib: Drain RCU callbacks during module teardown IPoIB reclamation completions can be signaled from inside an RCU callback. Teardown can wake before the callback returns and unload ib_ipoib while its code is still executing. Client registration failure can also remove already-added devices and queue callbacks. Wait after client and workqueue teardown.
Why it matters now
EPSS 0.00216 12th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.270, 5.15.221, 6.1.188 +5Red Hat: 7 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 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. 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 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-93108
- 2026-10-03 Alias added: GHSA-v32w-6gxx-mfwq
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-20 Affected versions changed · Red Hat
- 2026-10-20 CVSS score added · Red Hat
- 2026-11-01 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/bb9c23733a0c50e136bd40c27cb60023cc58e22c
- https://git.kernel.org/stable/c/4a6dc313f9661f80e4ed43461d7ed5615c2450ca
- https://git.kernel.org/stable/c/d8917353966d1d5a486437dd0dd68a2cf8ecb136
- https://git.kernel.org/stable/c/7bc08d7f9338c9f9c09965e5d020591c793a80cb
- https://git.kernel.org/stable/c/2b3330cfc097db2d31f47ad09261967630270d66
- https://git.kernel.org/stable/c/8dc5ffcb8efcc01e44dd1ebc490eaae72de3fadf
- https://git.kernel.org/stable/c/24ce944721dcd92ae62e7a448d770e2a3e79f5fd
- https://git.kernel.org/stable/c/31b7c700670830a0e8a4cdcd451c88a13cc5dc48
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Sources
- CVE-2026-93108 · CVE Program
- CVE-2026-93108 · NVD
- FIRST EPSS
- GHSA-v32w-6gxx-mfwq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-93108 · Red Hat security data · CC BY 4.0
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