CVE-2026-5164: Virtio Viostor Shared Discard Statecve-2026-5164-virtio-viostor-shared-discard-state
The `blk_discard` array used for processing UNMAP requests is accessed from a shared structure rather than a per-request structure. This creates a race condition during concurrent UNMAP commands, leading to data corruption and DoS. Move this state into a per-request structure such as `SRB_EXTENSION`.
