CVE-2022-48849

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: bypass tiling flag check in virtual display case (v2)

vkms leverages common amdgpu framebuffer creation, and also as it does not support FB modifier, there is no need to check tiling flags when initing framebuffer when virtual display is enabled.

This can fix below calltrace:

amdgpu 0000:00:08.0: GFX9+ requires FB check based on format modifier WARNING: CPU: 0 PID: 1023 at drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:1150 amdgpu_display_framebuffer_init+0x8e7/0xb40 [amdgpu]

v2: check adev->enable_virtual_display instead as vkms can be enabled in bare metal as well.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2f350ddadca3b96c72ed1481875f0b8fc1a01612 < cb29021be49858059138f75d6311a7c35a9379b2affected
LinuxLinux2f350ddadca3b96c72ed1481875f0b8fc1a01612 < e2b993302f40c4eb714ecf896dd9e1c5be7d4cd7affected
LinuxLinux5.16affected
LinuxLinux0 < 5.16unaffected
LinuxLinux5.16.15 <= 5.16.*unaffected
LinuxLinux5.17 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References