The licence accompanying the patches had language that prevented anyone using them from publishing benchmarks to show the extent to which the patches had slowed down the processors in question.
But several Linux distributions made a noise about this. Debian developer Henrique de Moraes Holschuh wrote on 15 August that the patch released was not distributable because of the licence restrictions.
He said that patches for Debian, which had been readied a week earlier, could not be uploaded for this reason.
Perens added: "The correct way to handle security problems is to own up to the damage, publish mitigations, and make it possible for your customers to get along.
"Hiding how they are damaged is unacceptable. Silencing free speech by those who would merely publish benchmarks? Bad business. Customers can’t trust your components when you do that."
Intel has not issued any formal statement about the change of the licence but merely published the changed portions, which cover redistribution, here.
A company spokesperson emailed this statement to iTWire: "We have simplified the Intel license to make it easier to distribute CPU microcode updates and posted the new version. As an active member of the open source community, we continue to welcome all feedback and thank the community.”