CVE-2022-48814

System panic via registered MDIO bus free

Published Jul 16, 2024 · Updated May 11, 2026

Denial of service in the Linux Seville DSA driver from 5.9 allows local users to panic affected systems during shutdown. The driver allocates its MDIO bus with devres but registers it with of_mdiobus_register, so device teardown can free the bus before unregistering it. The condition requires a Seville VSC9959 switch whose DSA master uses a bus such as fsl-mc that invokes remove during shutdown; the resulting kernel panic interrupts the shutdown operation.

CVSS severity5.5
Medium
EPSS probability0.27%
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 Seville DSA driver from 5.9 allows local users to panic affected systems during shutdown. The driver allocates its MDIO bus with devres but registers it with of_mdiobus_register, so device teardown can free the bus before unregistering it. The condition requires a Seville VSC9959 switch whose DSA master uses a bus such as fsl-mc that invokes remove during shutdown; the resulting kernel panic interrupts the shutdown operation.

The record

CVE
CVE-2022-48814
Published
Jul 16, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
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

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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=5.9
  2. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <0e816362d823cd46c666e64d8bffe329ee22f4cc
  3. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <1d13e7221035947c62800c9d3d99b4ed570e27e7
  4. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <bd488afc3b39e045ba71aab472233f2a78726e7b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <0e816362d823cd46c666e64d8bffe329ee22f4cc; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <1d13e7221035947c62800c9d3d99b4ed570e27e7; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <bd488afc3b39e045ba71aab472233f2a78726e7b

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.

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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

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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