Bug 2348011 (CVE-2022-49055)

Summary: CVE-2022-49055 kernel: drm/amdkfd: Check for potential null return of kmalloc_array()
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 2025-02-26 03:14:31 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Check for potential null return of kmalloc_array()

As the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference.
Therefore, it is better to check the return value of kmalloc_array() to avoid this confusion.
Comment 1 Avinash Hanwate 2025-02-26 13:01:18 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022652-CVE-2022-49055-b2a2@gregkh/T
Comment 4 Avinash Hanwate 2025-02-27 21:38:14 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022652-CVE-2022-49055-b2a2@gregkh/T