UBUNTU-CVE-2026-80702: High severity ubuntu/linux-hwe-edge vulnerability

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: fix guestmemorydirty bitfield clobbered as size Two sites in vmwgfxresource.c assign boolean literals to res->guestmemorysize, which is an unsigned long allocation-size field; the intended target is the adjacent res->guestmemorydirty bitfield. After the assignments the field holds 0 or 1 instead of the resource's MOB allocation size: - vmwresourcerelease() writes 0 (false), and - vmwresourceunbindlist() writes 1 (true). Subsequent revalidation paths read guestmemorysize when computing the dirty page range (vmwbodirtytransfertores()) and the buffer allocation size (vmwresourcebufalloc()), producing zero-length walks or wrap-around ranges that read or write past the MOB bitmap. The dirty-tracking intent of the original code (mark the resource as dirtied since the last sync) is also lost, since guestmemorydirty is never updated. Rename both assignments to guestmemorydirty.