CVE-2022-48813

Kernel panic via registered MDIO bus free

Published Jul 16, 2024 · Updated May 11, 2026

Denial of service in affected Linux kernels allows local users to panic the kernel during shutdown on systems using the Felix VSC9959 DSA switch. The Felix driver leaves a devres-allocated MDIO bus registered, so driver release passes the live bus to mdiobus_free and triggers a panic. The condition requires a Felix switch linked to a DSA master on a bus whose shutdown path removes drivers, and the panic interrupts the host.

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 affected Linux kernels allows local users to panic the kernel during shutdown on systems using the Felix VSC9959 DSA switch. The Felix driver leaves a devres-allocated MDIO bus registered, so driver release passes the live bus to mdiobus_free and triggers a panic. The condition requires a Felix switch linked to a DSA master on a bus whose shutdown path removes drivers, and the panic interrupts the host.

The record

CVE
CVE-2022-48813
Published
Jul 16, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
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 <209bdb7ec6a28c7cdf580a0a98afbc9fc3b98932
  3. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <8cda7577a0b4018572f31e0caadfabd305ea2786
  4. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <95e5402f9430b3c7d885dd3ec4c8c02c17936923
  5. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <9db6f056efd089e80d81c774c01b639adf30c097

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <209bdb7ec6a28c7cdf580a0a98afbc9fc3b98932; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <8cda7577a0b4018572f31e0caadfabd305ea2786; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <95e5402f9430b3c7d885dd3ec4c8c02c17936923; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <9db6f056efd089e80d81c774c01b639adf30c097

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

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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