CVE-2021-4093 Detail
This vulnerability is currently awaiting analysis.
Description
A flaw was found in the KVM’s AMD code for supporting the Secure Encrypted Virtualization-Encrypted State (SEV-ES). A KVM guest using SEV-ES can trigger out-of-bounds reads and writes in the host kernel via a malicious VMGEXIT for a string I/O instruction (for example, outs or ins) using the exit reason SVM_EXIT_IOIO. This issue results in a crash of the entire system or a potential guest-to-host escape scenario.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | Red Hat, Inc. |
| CWE-787 | Out-of-bounds Write | Red Hat, Inc. |
Change History
0 change records found show changes
Quick Info
CVE Dictionary Entry:
CVE-2021-4093
NVD Published Date:
02/18/2022
NVD Last Modified:
02/18/2022
Source:
Red Hat, Inc.