CVE-2022-50393

Summary

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

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < b892c57a3a04c8de247ab9ee08a0a8cf53290e19affected
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 4ff3d517cebe8a29b9f3c302b5292bb1ce291e00affected
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 3913f0179ba366f7d7d160c506ce00de1602bbc4affected
LinuxLinux4.2affected
LinuxLinux0 < 4.2unaffected
LinuxLinux5.19.17 <= 5.19.*unaffected
LinuxLinux6.0.3 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References