CVE-2021-41837

high

Description

An issue was discovered in AhciBusDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

References

https://www.insyde.com/security-pledge/SA-2022024

https://www.insyde.com/security-pledge

https://security.netapp.com/advisory/ntap-20220222-0003/

https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf

Details

Source: Mitre, NVD

Published: 2022-02-03

Updated: 2022-03-01

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.2

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Severity: High