Bug 2348351 (CVE-2022-49186)

Summary: CVE-2022-49186 kernel: clk: visconti: prevent array overflow in visconti_clk_register_gates()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: high    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:26:25 UTC 
In the Linux kernel, the following vulnerability has been resolved:

clk: visconti: prevent array overflow in visconti_clk_register_gates()

This code was using -1 to represent that there was no reset function.
Unfortunately, the -1 was stored in u8 so the if (clks[i].rs_id >= 0)
condition was always true.  This lead to an out of bounds access in
visconti_clk_register_gates().
Comment 1 Avinash Hanwate 2025-02-26 07:06:38 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022615-CVE-2022-49186-4d69@gregkh/T