CVE-2023-54233

Kernel crash via unsupported IPC4 topology widget

Published Dec 30, 2025 · Updated Dec 30, 2025

NULL-pointer dereference in Linux 6.0 through 6.2.10 allows local users to crash the kernel via an unsupported IPC4 topology widget. The sof_ipc4_route_setup() function dereferences module_info after unsupported widgets leave that field unset. Exploitation requires local low-privileged access and use of the SOF IPC4 audio topology path; the bounded consequence is a kernel Oops and service interruption.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL-pointer dereference in Linux 6.0 through 6.2.10 allows local users to crash the kernel via an unsupported IPC4 topology widget. The sof_ipc4_route_setup() function dereferences module_info after unsupported widgets leave that field unset. Exploitation requires local low-privileged access and use of the SOF IPC4 audio topology path; the bounded consequence is a kernel Oops and service interruption.

The record

CVE
CVE-2023-54233
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <170818974e9732506195c6302743856cc8bdfd6f
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e3720f92e0237921da537e47a0b24e27899203f8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <170818974e9732506195c6302743856cc8bdfd6f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e3720f92e0237921da537e47a0b24e27899203f8

Published CVSS scores

5.5Amazon LinuxCVSS: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

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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