Bug 2320273 (CVE-2024-47686)

Summary: CVE-2024-47686 kernel: ep93xx: clock: Fix off by one in ep93xx_div_recalc_rate()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2320341    
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Description OSIDB Bzimport 2024-10-21 13:07:23 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ep93xx: clock: Fix off by one in ep93xx_div_recalc_rate()

The psc->div[] array has psc->num_div elements.  These values come from
when we call clk_hw_register_div().  It's adc_divisors and
ARRAY_SIZE(adc_divisors)) and so on.  So this condition needs to be >=
instead of > to prevent an out of bounds read.
Comment 1 Robb Gatica 2024-10-21 15:02:55 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102109-CVE-2024-47686-e46a@gregkh/T