Bug 2419867 (CVE-2022-50619)

Summary: CVE-2022-50619 kernel: drm/amdkfd: Fix memory leak in kfd_mem_dmamap_userptr()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-12-08 07:04:39 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Fix memory leak in kfd_mem_dmamap_userptr()

If the number of pages from the userptr BO differs from the SG BO then the
allocated memory for the SG table doesn't get freed before returning
-EINVAL, which may lead to a memory leak in some error paths. Fix this by
checking the number of pages before allocating memory for the SG table.
Comment 1 Alexander B 2025-12-10 09:08:54 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120852-CVE-2022-50619-9b47@gregkh/T