Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.19.6/7.0-rc2. This issue affects the function pinconf_generic_parse_dt_config of the component pinctrl. The manipulation results in memory leak. This vulnerability is reported as CVE-2026-23337. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.19.6/7.0-rc2. Affected is the function pinconf_generic_parse_dt_config of the component pinctrl. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: pinctrl: pinconf-generic: Fix memory leak in pinconf_generic_parse_dt_config() In pinconf_generic_parse_dt_config(), if parse_dt_cfg() fails, it returns directly. This bypasses the cleanup logic and results in a memory leak of the cfg buffer. Fix this by jumping to the out label on failure, ensuring kfree(cfg) is called before returning.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-23337 since 01/13/2026. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 304083 (Linux Distros Unpatched Vulnerability : CVE-2026-23337), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.19.7 or 7.0-rc3 eliminates this vulnerability. Applying the patch 63ee429780a5d43b5b4406c6128109b0f47cf2f1/7a648d598cb8e8c62af3f0e020a25820a3f3a9a7 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 (304083). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.19.0
• 6.19.1
• 6.19.2
• 6.19.3
• 6.19.4
• 6.19.5
• 6.19.6
• 7.0-rc1
• 7.0-rc2

License

• open-source

Website

• Vendor: https://www.kernel.org/

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