> Transfer of the file you were trying to download or upload has been blocked in accordance with company policy. Please contact your system administrator if you believe this is in error.
Weird, maybe you are IP banned or it actually is some corp firewall on your side.
It's a conference presentation titled "Remote Code Execution through Intel CPU Bugs" by Kris Kaspersky and Alice Chang. Google finds copies elsewhere.
I can't say that I see how the "remote" part could possibly work, but as for local exploitation, errata often state that things like "data corruption" or "unpredictable behavior" can happen under "certain internal conditions" so this stuff may be exploitable if one can execute arbitrary instructions which trigger these internal conditions.
That comes from their end.