CVE-2021-4093
Vulnerability from cvelistv5
Published
2022-02-18 17:50
Modified
2024-08-03 17:16
Severity ?
Summary
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.
References
secalert@redhat.comhttps://bugs.chromium.org/p/project-zero/issues/detail?id=2222Exploit, Mailing List, Patch, Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2028584Issue Tracking, Patch, Third Party Advisory
Impacted products
n/akernel
Show details on NVD website

To clipboard 

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