In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). After resuming from S3 sleep mode in various versions of BIOS for some Lenovo ThinkPad systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: lenovo

Published: 2020-09-01T21:30:16.648832Z

Updated: 2024-09-16T23:16:41.057Z

Reserved: 2020-01-28T00:00:00

Link: CVE-2020-8341

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2020-09-01T22:15:10.377

Modified: 2020-09-11T16:21:52.787

Link: CVE-2020-8341

cve-icon Redhat

No data.