From TFA: > Dirty Frag belongs to the same class as Dirty Pipe and Copy Fail. However, while Dirty Pipe overwrites struct pipe_buffer, Dirty Frag overwrites th

From TFA: > Dirty Frag belongs to the same class as Dirty Pipe and Copy Fail. However, while Dirty Pipe overwrites struct pipe_buffer, Dirty Frag overwrites the frag of struct sk_buff So yup, Dirty Pipe is specifically mentioned.