CVE-2023-53442

Kernel crash via conflicting ADQ and switchdev modes

Published Sep 18, 2025 · Updated Sep 18, 2025

NULL pointer dereference in the Linux ice driver allows local users to crash the kernel by combining ADQ and switchdev modes. The ice_eswitch.c and ice_main.c paths fail to reject switchdev while ADQ is active or ADQ while switchdev is active, leaving an invalid state that dereferences a null pointer. Exploitation requires low-privileged local access, an ice-supported Intel adapter, and deliberate activation of two mutually exclusive features; the bounded consequence is a host crash.

CVSS severity5.5
Medium
EPSS probability0.14%
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 the Linux ice driver allows local users to crash the kernel by combining ADQ and switchdev modes. The ice_eswitch.c and ice_main.c paths fail to reject switchdev while ADQ is active or ADQ while switchdev is active, leaving an invalid state that dereferences a null pointer. Exploitation requires low-privileged local access, an ice-supported Intel adapter, and deliberate activation of two mutually exclusive features; the bounded consequence is a host crash.

The record

CVE
CVE-2023-53442
Published
Sep 18, 2025
Updated
Sep 18, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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=5.16
  2. Affected versionversion=fbc7b27af0f9fb181811424e29caf6825594a841 <1c82d1b736ce85e77fd4da05eca6f1f4a52a2bc3
  3. Affected versionversion=fbc7b27af0f9fb181811424e29caf6825594a841 <24f0d69da35d812b3a1104918014a29627140cb1
  4. Affected versionversion=fbc7b27af0f9fb181811424e29caf6825594a841 <43d00e102d9ecbe2635d7e3f2e14d2e90183d6af

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=fbc7b27af0f9fb181811424e29caf6825594a841 <1c82d1b736ce85e77fd4da05eca6f1f4a52a2bc3; version=fbc7b27af0f9fb181811424e29caf6825594a841 <24f0d69da35d812b3a1104918014a29627140cb1; version=fbc7b27af0f9fb181811424e29caf6825594a841 <43d00e102d9ecbe2635d7e3f2e14d2e90183d6af

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS: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

CWE-476NULL Pointer Dereference
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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