Linux Kernel up to 6.6.127/6.12.74/6.18.13/6.19.3 spi wpcm_fiu_probe memory_size null pointer dereference

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.6.127/6.12.74/6.18.13/6.19.3. This affects the function wpcm_fiu_probe of the component spi. This manipulation of the argument memory_size causes null pointer dereference. This vulnerability is tracked as CVE-2026-46261. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.6.127/6.12.74/6.18.13/6.19.3 and classified as critical. Affected by this vulnerability is the function wpcm_fiu_probe of the component spi. The manipulation of the argument memory_size with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: spi: wpcm-fiu: Fix potential NULL pointer dereference in wpcm_fiu_probe() platform_get_resource_byname() can return NULL, which would cause a crash when passed the pointer to resource_size(). Move the fiu->memory_size assignment after the error check for devm_ioremap_resource() to prevent the potential NULL pointer dereference.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-46261 since 05/13/2026. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 318715 (Linux Distros Unpatched Vulnerability : CVE-2026-46261), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.128, 6.12.75, 6.18.14 or 6.19.4 eliminates this vulnerability. Applying the patch 9e5cb7e67fbdb8320d68d87db882a92b36f6a1d9/2c538a0b3472e99c892c26f4940da38b7d87f632/0f93a80eb3fd596ddc5730d05e0e8c88e1aa2891/cb9b2dc34a9eef0855edb00ae9c9b7f72394281b/888a0a802c467bbe34a42167bdf9d7331333440a is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (318715) and CERT Bund (WID-SEC-2026-1802). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Open Source Linux Kernel

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 318715
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-46261

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.128/6.12.75/6.18.14/6.19.4
Patch: 9e5cb7e67fbdb8320d68d87db882a92b36f6a1d9/2c538a0b3472e99c892c26f4940da38b7d87f632/0f93a80eb3fd596ddc5730d05e0e8c88e1aa2891/cb9b2dc34a9eef0855edb00ae9c9b7f72394281b/888a0a802c467bbe34a42167bdf9d7331333440a

Timelineinfo

05/13/2026 CVE reserved
06/03/2026 +21 days Advisory disclosed
06/03/2026 +0 days VulDB entry created
06/10/2026 +7 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-46261 (🔒)
GCVE (CVE): GCVE-0-2026-46261
GCVE (VulDB): GCVE-100-368167
CERT Bund: WID-SEC-2026-1802 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 06/03/2026 21:02
Updated: 06/10/2026 13:23
Changes: 06/03/2026 21:02 (60), 06/05/2026 04:40 (2), 06/06/2026 01:03 (7), 06/10/2026 13:23 (10)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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