Bug 2320690 (CVE-2022-48966)

Summary: CVE-2022-48966 kernel: net: mvneta: Prevent out of bounds read in mvneta_config_rss()
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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Description OSIDB Bzimport 2024-10-21 21:03:03 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: mvneta: Prevent out of bounds read in mvneta_config_rss()

The pp->indir[0] value comes from the user.  It is passed to:

	if (cpu_online(pp->rxq_def))

inside the mvneta_percpu_elect() function.  It needs bounds checkeding
to ensure that it is not beyond the end of the cpu bitmap.
Comment 1 Avinash Hanwate 2024-10-22 07:58:38 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102143-CVE-2022-48966-d8f6@gregkh/T