CVE-2026-46261

Kernel crash via unchecked WPCM-FIU memory resource

Published Jun 3, 2026 · Updated Jun 3, 2026

NULL pointer dereference in the Linux kernel WPCM-FIU SPI driver allows local users to crash the kernel during device probing. wpcm_fiu_probe() passes a NULL result from platform_get_resource_byname() to resource_size() before validating the mapping result. Triggering the fault requires CAP_SYS_ADMIN to rebind the driver and a malformed device tree lacking the named resource on specific embedded hardware.

CVSS severity5.5
Medium
EPSS probability0.11%
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 kernel WPCM-FIU SPI driver allows local users to crash the kernel during device probing. wpcm_fiu_probe() passes a NULL result from platform_get_resource_byname() to resource_size() before validating the mapping result. Triggering the fault requires CAP_SYS_ADMIN to rebind the driver and a malformed device tree lacking the named resource on specific embedded hardware.

The record

CVE
CVE-2026-46261
Published
Jun 3, 2026
Updated
Jun 3, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 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=6.2
  2. Affected versionversion=9838c182471ee5532824bae7f2669d3539719f78 <0f93a80eb3fd596ddc5730d05e0e8c88e1aa2891
  3. Affected versionversion=9838c182471ee5532824bae7f2669d3539719f78 <2c538a0b3472e99c892c26f4940da38b7d87f632
  4. Affected versionversion=9838c182471ee5532824bae7f2669d3539719f78 <888a0a802c467bbe34a42167bdf9d7331333440a
  5. Affected versionversion=9838c182471ee5532824bae7f2669d3539719f78 <9e5cb7e67fbdb8320d68d87db882a92b36f6a1d9
  6. Affected versionversion=9838c182471ee5532824bae7f2669d3539719f78 <cb9b2dc34a9eef0855edb00ae9c9b7f72394281b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.2; version=9838c182471ee5532824bae7f2669d3539719f78 <0f93a80eb3fd596ddc5730d05e0e8c88e1aa2891; version=9838c182471ee5532824bae7f2669d3539719f78 <2c538a0b3472e99c892c26f4940da38b7d87f632; version=9838c182471ee5532824bae7f2669d3539719f78 <888a0a802c467bbe34a42167bdf9d7331333440a; version=9838c182471ee5532824bae7f2669d3539719f78 <9e5cb7e67fbdb8320d68d87db882a92b36f6a1d9; version=9838c182471ee5532824bae7f2669d3539719f78 <cb9b2dc34a9eef0855edb00ae9c9b7f72394281b

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS: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
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.

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Technologies

Your stack

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Your stack

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