CVE-2021-45971: High severity Insyde InsydeH2O vulnerability
An issue was discovered in SdHostDriver in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (CommBufferData).
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-45971?
CVE-2021-45971 is a vulnerability in SdHostDriver in Insyde InsydeH2O with kernel versions 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25.
How severe is CVE-2021-45971?
CVE-2021-45971 has a severity value of 8.2 (high).
What software is affected by CVE-2021-45971?
Insyde InsydeH2O versions 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25 are affected by CVE-2021-45971.
How can I fix CVE-2021-45971?
To fix CVE-2021-45971, it is recommended to update to the latest version of Insyde InsydeH2O that includes the necessary security patches.
Where can I find more information about CVE-2021-45971?
You can find more information about CVE-2021-45971 at the following references: [Reference 1](https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf), [Reference 2](https://security.netapp.com/advisory/ntap-20220216-0004/), [Reference 3](https://www.insyde.com/security-pledge).