tl'dr of the slides: Found on one processor... instruction Single malformed instruction in ring 3 locks Tested on 2 Windows kernels, 3 Linux kernels Kernel debugging, serial I/O, interrupt analysis seem to confirm Unfortunately, not finished with responsible disclosure No details available [yet] on chip, vendor, or instructions He's found a new f00f bug, winter 2017 is going to be interesting :)
For those not aware: https://en.wikipedia.org/wiki/Pentium_F00F_bug Can these kind of bugs possible to exploit to cause anything more than minor annoyance?
Use them to exploit the system itself - not likely. (Unless they cause some specific bad behaviour rather than a crash) But you can definitely use a DoS issue for other effects. For example if someone is using an auth revokation system which fails open, you could kill that part to use expired credentials. Or if you're able to sometimes inject data, you can keep killing the caching systems until your response is the saved one. (Like in DNS hijack)