Bug 2396403 (CVE-2022-50393) - CVE-2022-50393 kernel: drm/amdgpu: SDMA update use unlocked iterator
Summary: CVE-2022-50393 kernel: drm/amdgpu: SDMA update use unlocked iterator
Keywords:
Status: NEW
Alias: CVE-2022-50393
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-09-18 14:03 UTC by OSIDB Bzimport
Modified: 2025-09-29 03:52 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-09-18 14:03:01 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: SDMA update use unlocked iterator

SDMA update page table may be called from unlocked context, this
generate below warning. Use unlocked iterator to handle this case.

WARNING: CPU: 0 PID: 1475 at
drivers/dma-buf/dma-resv.c:483 dma_resv_iter_next
Call Trace:
 dma_resv_iter_first+0x43/0xa0
 amdgpu_vm_sdma_update+0x69/0x2d0 [amdgpu]
 amdgpu_vm_ptes_update+0x29c/0x870 [amdgpu]
 amdgpu_vm_update_range+0x2f6/0x6c0 [amdgpu]
 svm_range_unmap_from_gpus+0x115/0x300 [amdgpu]
 svm_range_cpu_invalidate_pagetables+0x510/0x5e0 [amdgpu]
 __mmu_notifier_invalidate_range_start+0x1d3/0x230
 unmap_vmas+0x140/0x150
 unmap_region+0xa8/0x110
Comment 1 Keith Grant 2025-09-18 15:40:42 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091853-CVE-2022-50393-d5da@gregkh/T
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