Fix race conditions in SVSM core protocol handling

coconut-svsm / svsm

COCONUT-SVSM

MIT License

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Fix race conditions in SVSM core protocol handling #320

Closed joergroedel closed 7 months ago

joergroedel commented 7 months ago

There are a couple of race conditions in how the SVSM core protocol handling is implemented. These issues can be used by an attacker to leak data out of the SVSM or escalate privileges of lower VMPLs.