CVE-2022-48812

Kernel panic via still-registered MDIO bus free

Published Jul 16, 2024 · Updated May 11, 2026

Denial of service in the Linux kernel's lantiq_gswip DSA driver allows local users to panic the kernel during system shutdown. The driver allocates an MDIO bus through devres but registers it outside devres, so teardown can free the bus while it remains registered. The path requires a GSWIP switch linked to a DSA master whose bus removes drivers during shutdown, interrupting the host as it powers down.

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 kernel's lantiq_gswip DSA driver allows local users to panic the kernel during system shutdown. The driver allocates an MDIO bus through devres but registers it outside devres, so teardown can free the bus while it remains registered. The path requires a GSWIP switch linked to a DSA master whose bus removes drivers during shutdown, interrupting the host as it powers down.

The record

CVE
CVE-2022-48812
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

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 <0d120dfb5d67edc5bcd1804e167dba2b30809afd
  3. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <2443ba2fe396bdde187a2fdfa6a57375643ae93c
  4. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <b5652bc50dde7b84e93dfb25479b64b817e377c1
  5. Affected versionversion=ac3a68d56651c3dad2c12c7afce065fe15267f44 <e177d2e85ebcd3008c4b2abc293f4118e04eedef

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <0d120dfb5d67edc5bcd1804e167dba2b30809afd; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <2443ba2fe396bdde187a2fdfa6a57375643ae93c; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <b5652bc50dde7b84e93dfb25479b64b817e377c1; version=ac3a68d56651c3dad2c12c7afce065fe15267f44 <e177d2e85ebcd3008c4b2abc293f4118e04eedef

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 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

T1499.004Application or System Exploitation

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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