CVE-2021-4093
CVE-2021-4093
Vexday Risk Score
3Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS —EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
18 feb 2022Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
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.
Productos afectados
n/a · kernel