---
id: CVE-2024-43872
title: 'RDMA/hns: Fix soft lockup under heavy CEQE load'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/hns: Fix soft lockup under heavy CEQE load

  CEQEs are handled in interrupt handler currently. This may cause the
  CPU core staying in interrupt context too long and…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= a5073d6054f75d7c94b3354206eec4b804d2fbd4 <
    97740304c953ac43aebd24678ae999fe0bc9decf
  - >-
    Linux >= a5073d6054f75d7c94b3354206eec4b804d2fbd4 <
    06580b33c183c9f98e2a2ca96a86137179032c08
  - >-
    Linux >= a5073d6054f75d7c94b3354206eec4b804d2fbd4 <
    2fdf34038369c0a27811e7b4680662a14ada1d6b
  - Linux 4.16
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T16:06:16.645858Z'
published: '2024-08-21'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T12:19:05.518Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-43872'
references:
  - url: 'https://git.kernel.org/stable/c/97740304c953ac43aebd24678ae999fe0bc9decf'
  - url: 'https://git.kernel.org/stable/c/06580b33c183c9f98e2a2ca96a86137179032c08'
  - url: 'https://git.kernel.org/stable/c/2fdf34038369c0a27811e7b4680662a14ada1d6b'
tags:
  - cve.org
epss: 0.00387
epssPercentile: 0.3311
ingestedAt: '2026-11-03T13:45:42.687Z'
---

## Overview

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

RDMA/hns: Fix soft lockup under heavy CEQE load

CEQEs are handled in interrupt handler currently. This may cause the
CPU core staying in interrupt context too long and lead to soft lockup
under heavy load.

Handle CEQEs in BH workqueue and set an upper limit for the number of
CEQE handled by a single call of work handler.

## Affected

- `Linux >= a5073d6054f75d7c94b3354206eec4b804d2fbd4 < 97740304c953ac43aebd24678ae999fe0bc9decf`
- `Linux >= a5073d6054f75d7c94b3354206eec4b804d2fbd4 < 06580b33c183c9f98e2a2ca96a86137179032c08`
- `Linux >= a5073d6054f75d7c94b3354206eec4b804d2fbd4 < 2fdf34038369c0a27811e7b4680662a14ada1d6b`
- `Linux 4.16`

## Remediation

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