CVE-2023-53658

Kernel crash via null driver-data dereference

Published Oct 7, 2025 · Updated Oct 7, 2025

NULL pointer dereference in affected Linux kernel versions allows local users with device-removal privileges to crash the kernel. The bcm_qspi_probe path returns success when both hif_mspi and mspi resources are absent, leaving platform driver data unset; bcm_qspi_remove then dereferences that null value while unregistering the SPI master. The crash requires a bcm-qspi device with neither resource and a later device-removal or driver-unbind operation, so systems without that hardware configuration are not exposed.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
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 affected Linux kernel versions allows local users with device-removal privileges to crash the kernel. The bcm_qspi_probe path returns success when both hif_mspi and mspi resources are absent, leaving platform driver data unset; bcm_qspi_remove then dereferences that null value while unregistering the SPI master. The crash requires a bcm-qspi device with neither resource and a later device-removal or driver-unbind operation, so systems without that hardware configuration are not exposed.

The record

CVE
CVE-2023-53658
Published
Oct 7, 2025
Updated
Oct 7, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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=4.9
  2. Affected versionversion=fa236a7ef24048bafaeed13f68df35a819794758 <217b6ea8cf7b819477bca597a6ae2d43d38ba283
  3. Affected versionversion=fa236a7ef24048bafaeed13f68df35a819794758 <22ae32d80ef590d12a2364e4621f90f7c58445c7
  4. Affected versionversion=fa236a7ef24048bafaeed13f68df35a819794758 <32b9c8f7892c19f7f5c9fed5fb410b9fd5990bb6
  5. Affected versionversion=fa236a7ef24048bafaeed13f68df35a819794758 <398e6a015877d44327f754aeb48ff3354945c78c
  6. Affected versionversion=fa236a7ef24048bafaeed13f68df35a819794758 <7c1f23ad34fcdace50275a6aa1e1969b41c6233f
  7. Affected versionversion=fa236a7ef24048bafaeed13f68df35a819794758 <a91c34357afcfaa5307e254f22a8452550a07b34
  8. Affected versionversion=fa236a7ef24048bafaeed13f68df35a819794758 <d20db3c58a7f9361e370a7850ceb60dbdf62eea3
  9. Affected versionversion=fa236a7ef24048bafaeed13f68df35a819794758 <d3dcdb43c872a3b967345144151a2c9bb9124c9b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=4.9; version=fa236a7ef24048bafaeed13f68df35a819794758 <217b6ea8cf7b819477bca597a6ae2d43d38ba283; version=fa236a7ef24048bafaeed13f68df35a819794758 <22ae32d80ef590d12a2364e4621f90f7c58445c7; version=fa236a7ef24048bafaeed13f68df35a819794758 <32b9c8f7892c19f7f5c9fed5fb410b9fd5990bb6; version=fa236a7ef24048bafaeed13f68df35a819794758 <398e6a015877d44327f754aeb48ff3354945c78c; version=fa236a7ef24048bafaeed13f68df35a819794758 <7c1f23ad34fcdace50275a6aa1e1969b41c6233f; version=fa236a7ef24048bafaeed13f68df35a819794758 <a91c34357afcfaa5307e254f22a8452550a07b34; version=fa236a7ef24048bafaeed13f68df35a819794758 <d20db3c58a7f9361e370a7850ceb60dbdf62eea3; version=fa236a7ef24048bafaeed13f68df35a819794758 <d3dcdb43c872a3b967345144151a2c9bb9124c9b

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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