Linux Kernel up to 7.0-rc4 spi null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 7.0-rc4. This affects an unknown function of the component spi. This manipulation causes null pointer dereference. This vulnerability is registered as CVE-2026-23475. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.0-rc4. It has been declared as critical. Affected by this vulnerability is some unknown processing of the component spi. The manipulation 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: fix statistics allocation The controller per-cpu statistics is not allocated until after the controller has been registered with driver core, which leaves a window where accessing the sysfs attributes can trigger a NULL-pointer dereference. Fix this by moving the statistics allocation to controller allocation while tying its lifetime to that of the controller (rather than using implicit devres).

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2026-23475 since 01/13/2026. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 311783 (Debian dla-4561 : linux-config-6.1 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10 or 7.0-rc5 eliminates this vulnerability. Applying the patch 80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4e/f13100b1f5f111989f0750540a795fdef47492af/df30056c78e8bead02d4be020199cabdbec0fef1/378b295f67102eef78cf2c28105f60ae1dab5cc1/118ce777d39f03cac99231196f820e4f998613a8/dee0774bbb2abb172e9069ce5ffef579b12b3ae9 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 vulnerability database at Tenable (311783). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 311783
Nessus Name: Debian dla-4561 : linux-config-6.1 - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.167/6.6.130/6.12.78/6.18.20/6.19.10/7.0-rc5
Patch: 80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4e/f13100b1f5f111989f0750540a795fdef47492af/df30056c78e8bead02d4be020199cabdbec0fef1/378b295f67102eef78cf2c28105f60ae1dab5cc1/118ce777d39f03cac99231196f820e4f998613a8/dee0774bbb2abb172e9069ce5ffef579b12b3ae9

Timelineinfo

01/13/2026 CVE reserved
04/03/2026 +79 days Advisory disclosed
04/03/2026 +0 days VulDB entry created
05/20/2026 +47 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23475 (🔒)
GCVE (CVE): GCVE-0-2026-23475
GCVE (VulDB): GCVE-100-355165

Entryinfo

Created: 04/03/2026 18:17
Updated: 05/20/2026 20:20
Changes: 04/03/2026 18:17 (58), 05/04/2026 14:48 (2), 05/20/2026 20:20 (10)
Complete: 🔍
Cache ID: 216::103

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