OESA-2026-2529 microcode_ctl security update

This is a tool to transform and deploy microcode update for x86 CPUs. Security Fixes: Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execution for some IntelR Processors within VMX non-root guest operation may allow an information...

OESA-2026-2461 microcode_ctl security update

This is a tool to transform and deploy microcode update for x86 CPUs. Security Fixes: Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execution for some IntelR Processors within VMX non-root guest operation may allow an information...

OESA-2026-2460 microcode_ctl security update

This is a tool to transform and deploy microcode update for x86 CPUs. Security Fixes: Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execution for some IntelR Processors within VMX non-root guest operation may allow an information...

OESA-2026-2458 microcode_ctl security update

This is a tool to transform and deploy microcode update for x86 CPUs. Security Fixes: Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execution for some IntelR Processors within VMX non-root guest operation may allow an information...

xen-kernel -- x86 task switch to VM86 mode mis-handled

The Xen Project reports: LDTR, just like TR, is purely a protected mode facility. Hence even when switching to a VM86 mode task, LDTR loading needs to follow protected mode semantics. This was violated by the code. On SVM AMD hardware: a malicious unprivileged guest process can escalate its...