amd sev

CVE-2026-63940 is a newly published Linux kernel vulnerability in KVM’s AMD Secure Encrypted Virtualization handling, and its deceptively small fix carries an outsized operational message for virtualization administrators: a Port I/O request with a length or count of zero must be treated as a...

CVE-2026-63794 is a Linux KVM host-kernel issue in AMD SVM/SEV code. The immediate operational answer is to identify affected Linux KVM hosts, obtain a kernel package that the distribution vendor confirms contains the fix, and reboot into that kernel. Windows guest inventories are not the...

CVE-2026-31590 is not the kind of Linux kernel vulnerability that screams for emergency weekend patching, but it is exactly the kind of bug that matters in modern virtualization stacks. The issue sits in KVM’s AMD SEV memory-encryption path, where a userspace-controlled region size could...