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CVE-2026-90289NVD
Vulnerability Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Resize MST HDCP per-connector arrays to 32
AMDGPU_DM_MAX_DISPLAY_INDEX is 31. It suggest a maximum number of
32 connectors. But the way it's used is like MAX_DISPLAY_COUNT.
Hence we're off by one with DRM core, which supports a max of 32
connectors.
Rename AMDGPU_DM_MAX_DISPLAY_INDEX to AMDGPU_DM_MAX_DISPLAY_COUNT
to match its actual use, and increase the size to 32 to match the
originally intended size.
drm/amd/display: Resize MST HDCP per-connector arrays to 32
AMDGPU_DM_MAX_DISPLAY_INDEX is 31. It suggest a maximum number of
32 connectors. But the way it's used is like MAX_DISPLAY_COUNT.
Hence we're off by one with DRM core, which supports a max of 32
connectors.
Rename AMDGPU_DM_MAX_DISPLAY_INDEX to AMDGPU_DM_MAX_DISPLAY_COUNT
to match its actual use, and increase the size to 32 to match the
originally intended size.
CVSS v3.1 Base Metrics — Score 7.8 (HIGH)
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Affected & Patched Versions
- Linux Linux >= 82986fd631fa04bcedaefe11a6b3767601cbe84f and < 0fa116a17b69a28712cdf209318e345b676d7f6c
- Linux Linux >= 82986fd631fa04bcedaefe11a6b3767601cbe84f and < 261e0fe4e2c99f687114b64b10b98db964b475f4
- Linux Linux >= 99c444d3c3c43db354b253d9bfac081073dcb484
- Linux Linux >= d90f97cb3821c47bdf773dcf6cade143773ec764
- Linux Linux >= 5.15.128 and < 5.16
- Linux Linux >= 6.1.47 and < 6.2
- Linux Linux >= 6.3
- Linux Linux 0fa116a17b69a28712cdf209318e345b676d7f6c
- Linux Linux 261e0fe4e2c99f687114b64b10b98db964b475f4
- Linux Linux 5.16
- Linux Linux 6.2