We have shared TLBleed with several operating system projects, in order for them to be able to implement mitigations if desired. As a result of seeing TLBleed, OpenBSD decided to disable /msg99141.html">Hyperthreading by default. This has prompted some speculation that TLBleed is a spectre-like attack, but that is not the case. OpenBSD also realizes the exact impact of TLBleed. There has been significant news coverage: TheRegister (and this one), ArsTechnica, bleepingcomputer, ZDnet, Techrepublic, TechTarget, ITwire, tweakers, and a personal favorite, the SecurityNow Podcast episode 669 (mp3, show notes, youtube).

The full paper will be online soon.