the fix is included in proxmox-kernel-7.0.14-24-pve(-signed), which is currently available up to the pve-no-subscription repository and will hit enterprise soon.
the 7.0.14 series is the only currently supported kernel series, there won't be...
The Issue: Based on querying QEMU Guest Agent, PVE 9, shows Total RAM usage of a running VM (as labeled in free -h ) , which is a combination of used and buff/cache.
Thus, in guests with workloads that consume all available RAM for buff/cache...