Insyde's Security Pledge
Insyde Security Advisory 2022009
|Insyde ID||Advisory Category||Impact of Vulnerability||Severity Rating||Original Date||Last Revised|
SMM memory corruption vulnerability allowing a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
This issue corresponds to CVE-2021-43522. It affects the AhciBusDxe driver. It was reported by the Binarly efiXplorer team. Fixes were incorporated in Kernel 5.1: 05.14.34, Kernel 5.2: 05.24.34, Kernel 5.3: 05.33.34, Kernel 5.4/5.5: Unaffected.
Insyde Software would like to thank Binarly for reporting this issue.