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).
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-06-16T15:49:34

Updated: 2024-08-04T16:11:36.601Z

Reserved: 2020-10-20T00:00:00

Link: CVE-2020-27339

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-06-16T16:15:07.897

Modified: 2024-11-21T05:21:01.897

Link: CVE-2020-27339

cve-icon Redhat

No data.