CVE-2023-53362

Local kernel crash via pseudo-device misclassification

Published Sep 17, 2025 · Updated Sep 17, 2025

Improper device-type validation in the Linux kernel allows local users to crash the kernel when binding an fsl-mc device to VFIO. The fsl-mc child-enumeration path treats a VFIO-created pseudo-device as an fsl-mc device instead of checking its device type before issuing MC operations. Reachability requires local access, VFIO binding privileges, and an fsl-mc deployment such as the documented NXP Layerscape platform; the result is a kernel Oops.

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

Improper device-type validation in the Linux kernel allows local users to crash the kernel when binding an fsl-mc device to VFIO. The fsl-mc child-enumeration path treats a VFIO-created pseudo-device as an fsl-mc device instead of checking its device type before issuing MC operations. Reachability requires local access, VFIO binding privileges, and an fsl-mc deployment such as the documented NXP Layerscape platform; the result is a kernel Oops.

The record

CVE
CVE-2023-53362
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=3c28a76124b25882411f005924be73795b6ef078 <303c9c63abb9390e906052863f82bb4e9824e5c0
  2. Affected versionversion=3c28a76124b25882411f005924be73795b6ef078 <5bd9dc3e767edf582be483be8d6bbc7433bd4cf8
  3. Affected versionversion=3c28a76124b25882411f005924be73795b6ef078 <8bdd5c21ec02835bd445d022f4c23195aff407d2
  4. Affected versionversion=6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3c28a76124b25882411f005924be73795b6ef078 <303c9c63abb9390e906052863f82bb4e9824e5c0; version=3c28a76124b25882411f005924be73795b6ef078 <5bd9dc3e767edf582be483be8d6bbc7433bd4cf8; version=3c28a76124b25882411f005924be73795b6ef078 <8bdd5c21ec02835bd445d022f4c23195aff407d2; version=6.1

Published CVSS scores

5.5UbuntuCVSS: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

T1499Endpoint Denial of Service

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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