Bug 2383433 (CVE-2025-38395)

Summary: CVE-2025-38395 kernel: regulator: gpio: Fix the out-of-bounds access to drvdata::gpiods
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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OS: Linux   
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Description OSIDB Bzimport 2025-07-25 14:04:32 UTC 
In the Linux kernel, the following vulnerability has been resolved:

regulator: gpio: Fix the out-of-bounds access to drvdata::gpiods

drvdata::gpiods is supposed to hold an array of 'gpio_desc' pointers. But
the memory is allocated for only one pointer. This will lead to
out-of-bounds access later in the code if 'config::ngpios' is > 1. So
fix the code to allocate enough memory to hold 'config::ngpios' of GPIO
descriptors.

While at it, also move the check for memory allocation failure to be below
the allocation to make it more readable.
Comment 1 Jon Moroney 2025-07-25 18:30:06 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025072509-CVE-2025-38395-3a19@gregkh/T