CVE-2021-41838: Buffer Overflow
An issue was discovered in SdHostDriver in the kernel 5.0 through 5.5 in Insyde InsydeH2O. There is an SMM callout that allows an attacker to access the System Management Mode and execute arbitrary code. This occurs because of a Numeric Range Comparison Without a Minimum Check.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-41838?
CVE-2021-41838 refers to an issue in SdHostDriver in the Insyde InsydeH2O kernel versions 5.0 through 5.5, which allows an attacker to access the System Management Mode and execute arbitrary code.
How severe is CVE-2021-41838?
CVE-2021-41838 has a severity rating of 8.2 (high).
Which software are affected by CVE-2021-41838?
Insyde InsydeH2O versions 5.1 through 5.5 are affected by CVE-2021-41838.
How can I fix CVE-2021-41838?
To fix CVE-2021-41838, it is recommended to update the affected Insyde InsydeH2O software to a version beyond 5.5.
Where can I find more information about CVE-2021-41838?
You can find more information about CVE-2021-41838 in the references provided: [link1](https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf), [link2](https://security.netapp.com/advisory/ntap-20220222-0001/), and [link3](https://www.insyde.com/security-pledge).