At least these (seem to) result in a kernel panic instead of privileged escalation or reading unauthorized memory.
But in a world where even djbdns had a (minor) security issue, I don't think it's reasonable to expect any non-trivial software—particularly software written in C—to be fully secure.
But in a world where even djbdns had a (minor) security issue, I don't think it's reasonable to expect any non-trivial software—particularly software written in C—to be fully secure.