CVE-2021-26334: AMD Chipset Driver Information Disclosure Vulnerability
First published: Tue Nov 09 2021(Updated: )
The AMDPowerProfiler.sys driver of AMD ?Prof tool may allow lower privileged users to access MSRs in kernel which may lead to privilege escalation and ring-0 code execution by the lower privileged user.
Credit: psirt@amd.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| <3.4.494 | ||
| <3.4.502 | ||
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Frequently Asked Questions
What is the severity of CVE-2021-26334?
CVE-2021-26334 is classified as a high-severity vulnerability due to the potential for privilege escalation and ring-0 code execution.
How do I fix CVE-2021-26334?
To address CVE-2021-26334, users should update the AMD μProf tool to a version later than 3.4.502.
Which systems are affected by CVE-2021-26334?
CVE-2021-26334 affects AMD μProf tool versions prior to 3.4.494 and includes various Windows systems where the driver is installed.
What is the impact of CVE-2021-26334?
CVE-2021-26334 allows lower privileged users to access Machine Specific Registers (MSRs), leading to potential system compromise.
When was CVE-2021-26334 reported?
CVE-2021-26334 was reported in early 2021, highlighting vulnerabilities in the AMD AMDPowerProfiler.sys driver.
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