---
id: CVE-2022-49074
title: 'irqchip/gic-v3: Fix GICR_CTLR.RWP polling'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  irqchip/gic-v3: Fix GICR_CTLR.RWP polling

  It turns out that our polling of RWP is totally wrong when checking
  for it in the redistributors, as we test the *distributor…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 <
    c7daf1b4ad809692d5c26f33c02ed8a031066548
  - >-
    Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 <
    3c07cc242baf83f0bddbbd9d7945d0bee56d8b57
  - >-
    Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 <
    ff24114bb08d8b90edf2aff0a4fd0689523e6c17
  - >-
    Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 <
    7218a789abb3e033f5f3a85636ca50d9ae7b0fc9
  - >-
    Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 <
    60e1eb4811f53f5f60c788297d978515e7a2637a
  - >-
    Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 <
    6fef3e3179e6ed8fecdd004ede541674ffa7749d
  - >-
    Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 <
    0df6664531a12cdd8fc873f0cac0dcb40243d3e9
  - Linux 3.17
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T19:42:45.681442Z'
published: '2025-02-26'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T19:49:35.969Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2022-49074'
references:
  - url: 'https://git.kernel.org/stable/c/c7daf1b4ad809692d5c26f33c02ed8a031066548'
  - url: 'https://git.kernel.org/stable/c/3c07cc242baf83f0bddbbd9d7945d0bee56d8b57'
  - url: 'https://git.kernel.org/stable/c/ff24114bb08d8b90edf2aff0a4fd0689523e6c17'
  - url: 'https://git.kernel.org/stable/c/7218a789abb3e033f5f3a85636ca50d9ae7b0fc9'
  - url: 'https://git.kernel.org/stable/c/60e1eb4811f53f5f60c788297d978515e7a2637a'
  - url: 'https://git.kernel.org/stable/c/6fef3e3179e6ed8fecdd004ede541674ffa7749d'
  - url: 'https://git.kernel.org/stable/c/0df6664531a12cdd8fc873f0cac0dcb40243d3e9'
tags:
  - cve.org
epss: 0.00271
epssPercentile: 0.19486
ingestedAt: '2026-11-05T22:38:31.560Z'
---

## Overview

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

irqchip/gic-v3: Fix GICR_CTLR.RWP polling

It turns out that our polling of RWP is totally wrong when checking
for it in the redistributors, as we test the *distributor* bit index,
whereas it is a different bit number in the RDs... Oopsie boo.

This is embarassing. Not only because it is wrong, but also because
it took *8 years* to notice the blunder...

Just fix the damn thing.

## Affected

- `Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 < c7daf1b4ad809692d5c26f33c02ed8a031066548`
- `Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 < 3c07cc242baf83f0bddbbd9d7945d0bee56d8b57`
- `Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 < ff24114bb08d8b90edf2aff0a4fd0689523e6c17`
- `Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 < 7218a789abb3e033f5f3a85636ca50d9ae7b0fc9`
- `Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 < 60e1eb4811f53f5f60c788297d978515e7a2637a`
- `Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 < 6fef3e3179e6ed8fecdd004ede541674ffa7749d`
- `Linux >= 021f653791ad17e03f98aaa7fb933816ae16f161 < 0df6664531a12cdd8fc873f0cac0dcb40243d3e9`
- `Linux 3.17`

## Remediation

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