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

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

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

Updated: 2022-02-22T19:07:12

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


Link: CVE-2020-27339

JSON object: View

cve-icon NVD Information

Status : Analyzed

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

Modified: 2022-07-12T17:42:04.277


Link: CVE-2020-27339

JSON object: View

cve-icon Redhat Information

No data.

CWE