---
id: CVE-2026-93108
title: |-
  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…
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…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b63b70d8774175b6f8393c495fe455f0fba55ce1 <
    bb9c23733a0c50e136bd40c27cb60023cc58e22c
  - >-
    Linux >= b63b70d8774175b6f8393c495fe455f0fba55ce1 <
    4a6dc313f9661f80e4ed43461d7ed5615c2450ca
  - >-
    Linux >= b63b70d8774175b6f8393c495fe455f0fba55ce1 <
    d8917353966d1d5a486437dd0dd68a2cf8ecb136
  - >-
    Linux >= b63b70d8774175b6f8393c495fe455f0fba55ce1 <
    7bc08d7f9338c9f9c09965e5d020591c793a80cb
  - >-
    Linux >= b63b70d8774175b6f8393c495fe455f0fba55ce1 <
    2b3330cfc097db2d31f47ad09261967630270d66
  - >-
    Linux >= b63b70d8774175b6f8393c495fe455f0fba55ce1 <
    8dc5ffcb8efcc01e44dd1ebc490eaae72de3fadf
  - >-
    Linux >= b63b70d8774175b6f8393c495fe455f0fba55ce1 <
    24ce944721dcd92ae62e7a448d770e2a3e79f5fd
  - >-
    Linux >= b63b70d8774175b6f8393c495fe455f0fba55ce1 <
    31b7c700670830a0e8a4cdcd451c88a13cc5dc48
  - Linux 3.6
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:18:05.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93108'
references:
  - url: 'https://git.kernel.org/stable/c/24ce944721dcd92ae62e7a448d770e2a3e79f5fd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2b3330cfc097db2d31f47ad09261967630270d66'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/31b7c700670830a0e8a4cdcd451c88a13cc5dc48'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4a6dc313f9661f80e4ed43461d7ed5615c2450ca'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7bc08d7f9338c9f9c09965e5d020591c793a80cb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8dc5ffcb8efcc01e44dd1ebc490eaae72de3fadf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bb9c23733a0c50e136bd40c27cb60023cc58e22c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d8917353966d1d5a486437dd0dd68a2cf8ecb136'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.754Z'
epss: 0.00211
epssPercentile: 0.10038
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.