RDMA/core: Wait for RCU callbacks before unloading ib_core
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: 6 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/core: Wait for RCU callbacks before unloading ib_core put_gid_ndev() is queued with call_rcu() and implemented in ib_core. Stopping the workqueues does not drain callbacks already queued, so RCU could invoke it after the module code has been unloaded. synchronize_rcu() does not wait for callbacks. Wait for them after all producers have stopped.
Why it matters now
EPSS 0.00177 7th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.270, 5.15.221, 6.1.188 +5Red Hat: 6 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 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 |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-93110
- 2026-10-03 Alias added: GHSA-7xfw-24xh-pg25
- 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/82dfd1df456227279b1c8c648983a530f2612098
- https://git.kernel.org/stable/c/1646e123e56c3ad679fbfb571e8eef6386efb729
- https://git.kernel.org/stable/c/8e4f1677c09d75d738099f42afcf65d8587b664a
- https://git.kernel.org/stable/c/7853af5f15738dc00aebaa1fc9f1f0df40f6f603
- https://git.kernel.org/stable/c/0d5817fa4819abdc445fa77b5be4f0d49334a864
- https://git.kernel.org/stable/c/9d998297fdaf47492f6679287f6552879d1a7e3a
- https://git.kernel.org/stable/c/48b72fa0d209a92fb51b834a6080171cfa207b2c
- https://git.kernel.org/stable/c/7d75592114d1664623c8cf191a12b38052c04483
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Sources
- CVE-2026-93110 · CVE Program
- CVE-2026-93110 · NVD
- FIRST EPSS
- GHSA-7xfw-24xh-pg25 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-93110 · Red Hat security data · CC BY 4.0
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