CVE-2022-48818

Shutdown interruption via unregistered MDIO bus free

Published Jul 16, 2024 · Updated May 11, 2026

Denial of service in the Linux kernel allows local users to trigger a kernel panic during system shutdown on affected hardware configurations. The mv88e6xxx driver allocates the MDIO bus with devres, which invokes mdiobus_free during driver release without the required prior unregistration. The failure requires a DSA master on a bus whose shutdown callback removes devices, such as dpaa2-eth on fsl-mc; the resulting oops interrupts poweroff.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in the Linux kernel allows local users to trigger a kernel panic during system shutdown on affected hardware configurations. The mv88e6xxx driver allocates the MDIO bus with devres, which invokes mdiobus_free during driver release without the required prior unregistration. The failure requires a DSA master on a bus whose shutdown callback removes devices, such as dpaa2-eth on fsl-mc; the resulting oops interrupts poweroff.

The record

CVE
CVE-2022-48818
Published
Jul 16, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.9
  2. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <1b451c3994a2d322f8e55032c62c8b47b7d95900
  3. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <8b626d45127d6f5ada7d815b83cfdc09e8cb1394
  4. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <8ccebe77df6e0d88c72ba5e69cf1835927e53b6c
  5. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <f53a2ce893b2c7884ef94471f170839170a4eba0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <1b451c3994a2d322f8e55032c62c8b47b7d95900; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <8b626d45127d6f5ada7d815b83cfdc09e8cb1394; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <8ccebe77df6e0d88c72ba5e69cf1835927e53b6c; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <f53a2ce893b2c7884ef94471f170839170a4eba0

Published CVSS scores

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo