CVE-2022-4662

System hang via nested USB device reset

Published Dec 22, 2022 · Updated Apr 9, 2025

Denial of service in the Linux kernel USB core in 6.0-rc4 allows local users to hang the system through a nested device reset. During rtl8712 driver unbinding, its remove callback calls usb_reset_device inside an ongoing reset and recursively reacquires the usb-storage interface lock. Exploitation requires local access to attach a crafted USB device or otherwise trigger the nested reset, and the resulting deadlock hangs the kernel.

CVSS severity5.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel USB core in 6.0-rc4 allows local users to hang the system through a nested device reset. During rtl8712 driver unbinding, its remove callback calls usb_reset_device inside an ongoing reset and recursively reacquires the usb-storage interface lock. Exploitation requires local access to attach a crafted USB device or otherwise trigger the nested reset, and the resulting deadlock hangs the kernel.

The record

CVE
CVE-2022-4662
Published
Dec 22, 2022
Updated
Apr 9, 2025
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-455, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Linux kernel 6.0-rc4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=Linux kernel 6.0-rc4

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-455Non-exit on Failed Initialization
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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