Bug 2327179 (CVE-2024-50295)

Summary: CVE-2024-50295 kernel: net: arc: fix the device for dma_map_single/dma_unmap_single
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2327241    
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Description OSIDB Bzimport 2024-11-19 02:02:07 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: arc: fix the device for dma_map_single/dma_unmap_single

The ndev->dev and pdev->dev aren't the same device, use ndev->dev.parent
which has dma_mask, ndev->dev.parent is just pdev->dev.
Or it would cause the following issue:

[   39.933526] ------------[ cut here ]------------
[   39.938414] WARNING: CPU: 1 PID: 501 at kernel/dma/mapping.c:149 dma_map_page_attrs+0x90/0x1f8
Comment 1 Avinash Hanwate 2024-11-19 05:34:16 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024111959-CVE-2024-50295-1201@gregkh/T