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). Lenovo was notified that after resuming from S3 sleep mode in various versions of BIOS for Lenovo systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.
References
Link Resource
https://support.lenovo.com/solutions/LEN-26332 Patch Vendor Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: lenovo

Published: 2019-04-04T00:00:00

Updated: 2019-04-10T17:04:19

Reserved: 2019-01-11T00:00:00


Link: CVE-2019-6156

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2019-04-10T17:29:00.463

Modified: 2020-08-24T17:37:01.140


Link: CVE-2019-6156

JSON object: View

cve-icon Redhat Information

No data.

CWE