drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-64219 · Microsoft / collected KEV context

cve-program · CVE-2026-64219

• https://git.kernel.org/stable/c/d6590e3f766e3111dd1beaf88b9384d117acfa6b
• https://git.kernel.org/stable/c/16a5fa57565afb6bf37e18129921c270c93d8e2b
• https://git.kernel.org/stable/c/90c398e822ca76e40548df0c061dd4f93ea92d71
• https://git.kernel.org/stable/c/3265f3ed373fb8048be713aadcdf702579a0e53d
• https://git.kernel.org/stable/c/1ecde19bfce6535bffddad1139ff466b6d401b8e
• https://git.kernel.org/stable/c/1c8c6e912f2945b2a3e669afca6b52174b88e86e
• https://git.kernel.org/stable/c/6c92f6d9600efa3ef0d9e560a2b52776d9803c29

No related operational record is retained in the current change model.