Linux Kernel up to 7.0.12 pinctrl regcache_maple_populate dev null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.67-

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 7.0.12. Impacted is the function regcache_maple_populate of the component pinctrl. This manipulation of the argument dev causes null pointer dereference. This vulnerability appears as CVE-2026-53344. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.0.12. It has been declared as critical. Affected by this vulnerability is the function regcache_maple_populate of the component pinctrl. The manipulation of the argument dev 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: pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init Regmap initialization triggers regcache_maple_populate() which attempts SPI read to populate cache. SPI read requires mcp->dev and mcp->addr to be set, without them, NULL pointer dereference occurs during probe. Move initialization before mcp23s08_spi_regmap_init() call.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-53344 since 06/09/2026. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 7.0.13 eliminates this vulnerability. Applying the patch 3a13bb9540dfd7014c5601608afcbbadbbcfd673/8473c3a197b57ff01396f7a2ec6ddf65383820d4 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.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

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

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 7.0.13
Patch: 3a13bb9540dfd7014c5601608afcbbadbbcfd673/8473c3a197b57ff01396f7a2ec6ddf65383820d4

Timelineinfo

06/09/2026 CVE reserved
07/01/2026 +22 days Advisory disclosed
07/01/2026 +0 days VulDB entry created
07/01/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-53344 (🔒)
GCVE (CVE): GCVE-0-2026-53344
GCVE (VulDB): GCVE-100-375523

Entryinfo

Created: 07/01/2026 16:12
Changes: 07/01/2026 16:12 (60)
Complete: 🔍
Cache ID: 216::103

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