CVE-2026-90289

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An off-by-one error exists in the drm/amd/display component. The constant AMDGPU DM MAX DISPLAY INDEX was set to 31, but it was utilized as a count rather than an index. This created a discrepancy with the DRM core, which supports a maximum of 32 connectors, leading to incorrectly sized MST HDCP per-connector arrays.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.