Bug 2405734 (CVE-2022-50557)

Summary: CVE-2022-50557 kernel: pinctrl: thunderbay: fix possible memory leak in thunderbay_build_functions()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-10-22 14:03:18 UTC 
In the Linux kernel, the following vulnerability has been resolved:

pinctrl: thunderbay: fix possible memory leak in thunderbay_build_functions()

The thunderbay_add_functions() will free memory of thunderbay_funcs
when everything is ok, but thunderbay_funcs will not be freed when
thunderbay_add_functions() fails, then there will be a memory leak,
so we need to add kfree() when thunderbay_add_functions() fails to
fix it.

In addition, doing some cleaner works, moving kfree(funcs) from
thunderbay_add_functions() to thunderbay_build_functions().
Comment 1 Jon Moroney 2025-10-22 17:42:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102206-CVE-2022-50557-7adc@gregkh/T