Linux Kernel up to 6.19.11 gpio devm_regmap_init_mmio 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 was found in Linux Kernel up to 6.19.11. It has been classified as critical. This affects the function devm_regmap_init_mmio of the component gpio. Performing a manipulation results in null pointer dereference. This vulnerability is reported as CVE-2026-43008. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.19.11. This affects the function devm_regmap_init_mmio of the component gpio. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: gpio: qixis-fpga: Fix error handling for devm_regmap_init_mmio() devm_regmap_init_mmio() returns an ERR_PTR() on failure, not NULL. The original code checked for NULL which would never trigger on error, potentially leading to an invalid pointer dereference. Use IS_ERR() and PTR_ERR() to properly handle the error case.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-43008 since 05/01/2026. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.19.12 eliminates this vulnerability. Applying the patch e54b8fe9454cc786590a0b88db96afe0cdc8a83d/8de4e0f44c638c66cdc5eeb4d5ab9acd61c31e4f 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.

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Productinfo

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Version

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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

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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

EPSS Score: 🔒
EPSS Percentile: 🔒

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 6.19.12
Patch: e54b8fe9454cc786590a0b88db96afe0cdc8a83d/8de4e0f44c638c66cdc5eeb4d5ab9acd61c31e4f

Timelineinfo

05/01/2026 Advisory disclosed
05/01/2026 +0 days CVE reserved
05/01/2026 +0 days VulDB entry created
05/01/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43008 (🔒)
GCVE (CVE): GCVE-0-2026-43008
GCVE (VulDB): GCVE-100-360687

Entryinfo

Created: 05/01/2026 17:56
Changes: 05/01/2026 17:56 (59)
Complete: 🔍
Cache ID: 216::103

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