SB20260325117 - Missing release of memory after effective lifetime in Linux kernel pinctrl driver

Description

This security bulletin contains information about 1 vulnerability.

1) Missing release of memory after effective lifetime (CVE-ID: CVE-2026-23337)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper memory management in the pinctrl subsystem when parsing device tree configuration. A local user can trigger a memory leak by providing malformed device tree configuration, leading to gradual resource exhaustion.

Exploitation requires the ability to supply or influence device tree configuration processed by the kernel.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/63ee429780a5d43b5b4406c6128109b0f47cf2f1
• https://git.kernel.org/stable/c/7a648d598cb8e8c62af3f0e020a25820a3f3a9a7