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PRIOn knowledge basePRION:CVE-2021-33627HistoryFeb 03, 2022 - 2:15 a.m.
Design/Logic Flaw
2022-02-0302:15:00
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An issue was discovered in Insyde InsydeH2O 5.x, affecting FwBlockServiceSmm. Software SMI services that use the Communicate() function of the EFI_SMM_COMMUNICATION_PROTOCOL do not check whether the address of the buffer is valid, which allows use of SMRAM, MMIO, or OS kernel addresses
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