Bug 2451275 (CVE-2026-23337)

Summary: CVE-2026-23337 kernel: pinctrl: pinconf-generic: Fix memory leak in pinconf_generic_parse_dt_config()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the Linux kernel's pinctrl subsystem, specifically within the pinconf-generic module. This vulnerability occurs when the `pinconf_generic_parse_dt_config()` function fails to properly deallocate memory, bypassing the intended cleanup logic. This oversight results in a memory leak, which can lead to a gradual degradation of system performance and stability over time.
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Description OSIDB Bzimport 2026-03-25 11:08:21 UTC 
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.
Comment 1 Alexander B 2026-03-25 11:35:30 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026032534-CVE-2026-23337-5018@gregkh/T