[runeks]

Can anyone confirm if this is a denial-of-service attack (through memory exhaustion)?

I’m no security researcher but, as I understand, it shouldn’t be exploitable if this is the case.

[nothrabannosir]

DoS of safari or the kernel? It's a kernel panic, which is not a safari dos; no user space app should be allowed to crash the kernel. Memory exhaustion should just trigger an OOM kill at worst.