Bug 2320222 (CVE-2024-47729)

Summary: CVE-2024-47729 kernel: drm/xe: Use reserved copy engine for user binds on faulting devices
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: 2320293    
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Description OSIDB Bzimport 2024-10-21 13:03:27 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/xe: Use reserved copy engine for user binds on faulting devices

User binds map to engines with can fault, faults depend on user binds
completion, thus we can deadlock. Avoid this by using reserved copy
engine for user binds on faulting devices.

While we are here, normalize bind queue creation with a helper.

v2:
 - Pass in extensions to bind queue creation (CI)
v3:
 - s/resevered/reserved (Lucas)
 - Fix NULL hwe check (Jonathan)
Comment 1 Robb Gatica 2024-10-21 13:47:50 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102105-CVE-2024-47729-8985@gregkh/T