---
id: CVE-2023-53528
title: 'RDMA/rxe: Fix unsafe drain work queue code'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/rxe: Fix unsafe drain work queue code

  If create_qp does not fully succeed it is possible for qp cleanup
  code to attempt to drain the send or recv work queues befo…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 49dc9c1f0c7e396654a31a480328fffd902fa494 <
    da572f6313aeead1f79e0810666bd8d8ffc794d4
  - >-
    Linux >= 49dc9c1f0c7e396654a31a480328fffd902fa494 <
    d366642b3099bd322375f5b71ba84ab1d586cd6d
  - >-
    Linux >= 49dc9c1f0c7e396654a31a480328fffd902fa494 <
    5993b75d0bc71cd2b441d174b028fc36180f032c
  - Linux 6.4
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:23:19.377442Z'
published: '2025-10-01'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:31:13.739Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-53528'
references:
  - url: 'https://git.kernel.org/stable/c/da572f6313aeead1f79e0810666bd8d8ffc794d4'
  - url: 'https://git.kernel.org/stable/c/d366642b3099bd322375f5b71ba84ab1d586cd6d'
  - url: 'https://git.kernel.org/stable/c/5993b75d0bc71cd2b441d174b028fc36180f032c'
tags:
  - cve.org
epss: 0.00146
epssPercentile: 0.03897
ingestedAt: '2026-11-05T22:38:31.807Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

RDMA/rxe: Fix unsafe drain work queue code

If create_qp does not fully succeed it is possible for qp cleanup
code to attempt to drain the send or recv work queues before the
queues have been created causing a seg fault. This patch checks
to see if the queues exist before attempting to drain them.

## Affected

- `Linux >= 49dc9c1f0c7e396654a31a480328fffd902fa494 < da572f6313aeead1f79e0810666bd8d8ffc794d4`
- `Linux >= 49dc9c1f0c7e396654a31a480328fffd902fa494 < d366642b3099bd322375f5b71ba84ab1d586cd6d`
- `Linux >= 49dc9c1f0c7e396654a31a480328fffd902fa494 < 5993b75d0bc71cd2b441d174b028fc36180f032c`
- `Linux 6.4`

## Remediation

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