In the kernel in Insyde InsydeH2O 5.x, certain SMM drivers did not correctly validate the CommBuffer and CommBufferSize parameters, allowing callers to corrupt either the firmware or the OS memory. The fixed versions for this issue in the AhciBusDxe, IdeBusDxe, NvmExpressDxe, SdHostDriverDxe, and SdMmcDeviceDxe drivers are 05.16.25, 05.26.25, 05.35.25, 05.43.25, and 05.51.25 (for Kernel 5.1 through 5.5).
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Solution
No solution given by the vendor.
Workaround
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History
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-04T16:11:36.601Z
Reserved: 2020-10-20T00:00:00
Link: CVE-2020-27339

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Status : Modified
Published: 2021-06-16T16:15:07.897
Modified: 2024-11-21T05:21:01.897
Link: CVE-2020-27339

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