An SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to send arbitrary data to SMM which could lead to privilege escalation.
The product writes data past the end, or before the beginning, of the intended buffer.
Link | Tags |
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https://www.insyde.com/security-pledge | not applicable |
https://www.insyde.com/security-pledge/SA-2023055 | vendor advisory |