CVE-2022-48808

Kernel panic via stale DSA master pointer

Published Jul 16, 2024 · Updated May 11, 2026

Linux 5.15 before 5.15.155 and 5.16 before 5.16.10 allows local users to trigger a kernel panic during shutdown. The dsa_slave_netdevice_event handler calls dev_close_many on slave interfaces already unregistered by dsa_switch_shutdown because master->dsa_ptr remains non-NULL. Systems require an active dpaa2-eth DSA master with Marvell switches during reboot or master unbinding; the resulting panic interrupts shutdown.

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

Linux 5.15 before 5.15.155 and 5.16 before 5.16.10 allows local users to trigger a kernel panic during shutdown. The dsa_slave_netdevice_event handler calls dev_close_many on slave interfaces already unregistered by dsa_switch_shutdown because master->dsa_ptr remains non-NULL. Systems require an active dpaa2-eth DSA master with Marvell switches during reboot or master unbinding; the resulting panic interrupts shutdown.

The record

CVE
CVE-2022-48808
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

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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=0650bf52b31ff35dc6430fc2e37969c36baba724 <89b60402d43cdab4387dbbf24afebda5cf092ae7
  2. Affected versionversion=0650bf52b31ff35dc6430fc2e37969c36baba724 <ee534378f00561207656663d93907583958339ae
  3. Affected versionversion=0650bf52b31ff35dc6430fc2e37969c36baba724 <ff45899e732e57088985e3a497b1d9100571c0f5
  4. Affected versionversion=5.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0650bf52b31ff35dc6430fc2e37969c36baba724 <89b60402d43cdab4387dbbf24afebda5cf092ae7; version=0650bf52b31ff35dc6430fc2e37969c36baba724 <ee534378f00561207656663d93907583958339ae; version=0650bf52b31ff35dc6430fc2e37969c36baba724 <ff45899e732e57088985e3a497b1d9100571c0f5; version=5.15

Published CVSS scores

5.5NVDCVSS: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 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

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

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Your stack

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