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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.
| Reporter | Title | Published | Views | Family All 234 |
|---|---|---|---|---|
 | CVE-2021-4093 affecting package kernel 5.10.161.1-1 | 10 Mar 202223:47 | – | cbl_mariner |
 | Linux kernel 缓冲区错误漏洞 | 3 Feb 202200:00 | – | cnnvd |
 | CVE-2021-4093 | 18 Feb 202217:50 | – | cve |
 | CVE-2021-4093 | 18 Feb 202217:50 | – | cvelist |
 | CVE-2021-4093 | 18 Feb 202217:50 | – | debiancve |
 | EUVD-2021-33979 | 3 Oct 202520:07 | – | euvd |
 | CVE-2021-4093 | 18 Feb 202218:15 | – | nvd |
 | Ubuntu: Security Advisory (USN-5265-1) | 3 Feb 202200:00 | – | openvas |
 | BELL-CVE-2021-4093 CVE-2021-4093 does not affect BellSoft software | 18 Feb 202218:15 | – | osv |
| CLSA-2023-1690294029 kernel: Fix of 29 CVEs | 25 Jul 202314:07 | – | osv |
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01 Mar 2022 08:00Current
7.2High risk
Vulners AI Score7.2
CVSS 27.2
CVSS 3.18.8
EPSS0.0009