There are good reasons for that history which are still relevant today.
We have decades of history of memory corruption bugs that were initially thought to only result in a DoS, that with a little bit of work on the part of exploit developers have turned into reliable RCE.
I don't believe that's the history here but I could be wrong. The history is that CIA encompasses availability, which it shouldn't.
Regardless, I don't think it matters. If you truly believe your DoS may be a likely privesc etc, label it as those. The system accounts for this. The insanely vast majority of DoS are blatantly not primitives for other exploits.