you can not disable SMM no matter how early in the boot process you get. The memory it runs from is walled off by registers you can not set. It is enabled by write-once (sticky) bits. The interrupts vector to firmware.
Nope, you can't just disable that code at boot time. It's been enabled long before. On Wed, Aug 12, 2026 at 11:01 AM Ethan Azariah <[email protected]> wrote: > On Sat, Aug 8, 2026, at 3:49 PM, ron minnich wrote: > > for all of you who ever suffered with smm, here's another trivial break. > I > > like this one a lot. > > > > https://github.com/xoreaxeaxeax/smiiiiiiiiiiiiiiii > > > > "It turns out that you can break SMM — the secure, ultra privileged > > execution environment running invisibly in the background of every x86 > CPU > > — with nothing more than an obscenely long-running machine instruction." > > > > That was easy. Usually it took more effort. > > Entertaining, but if you can inject code into that point of the boot > process, can't you just disable the code which enables SMM? ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T496d301e510c8cf1-Mcb700f5bf4bbf5c7521f05ab Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
