---
id: CVE-2026-98353
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/erdma: Use IRQ-safe XArray helpers for QP and CQ tables

  Locked QP and CQ lookups from EQ interrupts can deadlock with
  create-path XArray updates
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/erdma: Use IRQ-safe XArray helpers for QP and CQ tables

  Locked QP and CQ lookups from EQ interrupts can deadlock with
  create-path XArray updates. If an interrupt …
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4545f355654d044d35a31cd01cc46f491a8a7c36 <
    74d4085221a7ec5440996af199ccadfa75b9eb0e
  - >-
    Linux >= 98df2aee1459ee1c62c70cbe9b370d2a532aea36 <
    00baeade709fb66da647e8327e8398bb532e30f7
  - Linux 610ef81797bb4f709e8675c1d8d093bb9ccdcbd8
  - Linux c0a83f29a24c7e7f8516630848ef6db4c174deed
  - Linux 05b8ca493dd02319bca93c640b259c2ba51ef321
  - Linux 1fc9c1933959d2776a1ce7bf424251b8b5b586cd
  - Linux 6e32f84b63c054e09392153125d7202abab2d14b
  - Linux ec987c0654651036dad6a42f7fa2a6d7c16a3687
  - Linux c92686867638cda954fdb2bdbac8a75e3aa6eaae
  - Linux >= 7.2.6 < 7.2.8
  - Linux >= 6.1.188 < 6.2
  - Linux >= 6.6.157 < 6.7
  - Linux >= 6.12.110 < 6.13
  - Linux >= 6.18.52 < 6.19
  - Linux 7.3-rc1
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:28.750'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98353'
references:
  - url: 'https://git.kernel.org/stable/c/00baeade709fb66da647e8327e8398bb532e30f7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/74d4085221a7ec5440996af199ccadfa75b9eb0e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98353.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98353'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2546463'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98353'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98353'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98353.mbox
  - url: 'https://git.kernel.org/stable/c/e32aa1d85126e6d5ef6efd594ced3f75178886ce'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-10-06T08:50:17.396Z'
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-833
epss: 0.00154
epssPercentile: 0.0452
---

## Overview

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

RDMA/erdma: Use IRQ-safe XArray helpers for QP and CQ tables

Locked QP and CQ lookups from EQ interrupts can deadlock with
create-path XArray updates. If an interrupt arrives while the create
path holds the plain xa_lock, the lookup spins forever trying to
acquire the same lock.

Use IRQ-safe XArray helpers for all QP and CQ create-path updates,
including the GSI QP store and error paths. Initialize both arrays with
XA_FLAGS_LOCK_IRQ so sleeping allocations preserve interrupt state.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-10-07 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98353.json)