CyberRota Analysis
This is a low severity vulnerability with a CVSS score of 3.3. See the original NVD description below for full technical details.
CVE
CVE-2021-26342
Severity
LOW
CVSS
3.3
EPSS
0.21%
Original NVD Description
In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a particular sequence of operations that includes creation of a new virtual machine control block (VMCB). The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for disclosure of SEV guest memory contents. Users of SEV-ES/SEV-SNP guest VMs are not impacted by this vulnerability.
Related CVEs
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