What’s Vulnerable › Vulnerabilities

CVE-2026-93108: RDMA/ipoib: Drain RCU callbacks during module teardown

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

Description

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.

Affected products

• Linux kernel: 3.6 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/24ce944721dcd92ae62e7a448d770e2a3e79f5fd
• https://git.kernel.org/stable/c/2b3330cfc097db2d31f47ad09261967630270d66
• https://git.kernel.org/stable/c/31b7c700670830a0e8a4cdcd451c88a13cc5dc48
• https://git.kernel.org/stable/c/4a6dc313f9661f80e4ed43461d7ed5615c2450ca
• https://git.kernel.org/stable/c/7bc08d7f9338c9f9c09965e5d020591c793a80cb
• https://git.kernel.org/stable/c/8dc5ffcb8efcc01e44dd1ebc490eaae72de3fadf
• https://git.kernel.org/stable/c/bb9c23733a0c50e136bd40c27cb60023cc58e22c
• https://git.kernel.org/stable/c/d8917353966d1d5a486437dd0dd68a2cf8ecb136

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