---
id: CVE-2026-89454
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  PCI: plda: Fix IRQ domain leaks in the error paths of plda_init_interrupts()

  plda_init_interrupts() initializes IRQ domains and creates IRQ mapping but
  does not unwind…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  PCI: plda: Fix IRQ domain leaks in the error paths of plda_init_interrupts()

  plda_init_interrupts() initializes IRQ domains and creates IRQ mapping but
  does not unwind…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4602c370bdf6946b4e954a3db0ef5958aac2b7b4 <
    01b05cebe1e862e31e382359848d7dca02525a4f
  - >-
    Linux >= 4602c370bdf6946b4e954a3db0ef5958aac2b7b4 <
    4b575052ea65423693726a21826d783cf3f1745e
  - >-
    Linux >= 4602c370bdf6946b4e954a3db0ef5958aac2b7b4 <
    e54e8d2a0f9c8bf251ae4385ea4f4a68840fedad
  - >-
    Linux >= 4602c370bdf6946b4e954a3db0ef5958aac2b7b4 <
    19a30bbb6477bfd7e3109b7a2943e6597ee9de37
  - Linux 6.11
published: '2026-09-11'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T20:19:26.097'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89454'
references:
  - url: 'https://git.kernel.org/stable/c/01b05cebe1e862e31e382359848d7dca02525a4f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/19a30bbb6477bfd7e3109b7a2943e6597ee9de37'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4b575052ea65423693726a21826d783cf3f1745e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e54e8d2a0f9c8bf251ae4385ea4f4a68840fedad'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89454.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89454'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532273'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89454'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89454'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89454.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-14T08:36:32.605Z'
epss: 0.00209
epssPercentile: 0.09776
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-772
---

## Overview

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

PCI: plda: Fix IRQ domain leaks in the error paths of plda_init_interrupts()

plda_init_interrupts() initializes IRQ domains and creates IRQ mapping but
does not unwind them when later step fails.

If platform_get_irq() or either irq_create_mapping() fails
in plda_init_interrupts(), the domains are never deinitialized. If
irq_create_mapping() fails, port->intx_irq stays initialized.

Hence, remove the IRQ domains in the error path by calling
plda_pcie_irq_domain_deinit().

Since plda_pcie_irq_domain_deinit() now disposes of the intx_irq and
msi_irq mappings itself before removing their domains, the msi_irq
mapping failure path can go directly to err_irq_domain_deinit instead of
disposing of port->intx_irq separately first.

This issue was found by automated review of sashiko-bot

[mani: commit log]

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89454.json)