CVE-2026-46032

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT<br /> <br /> If loading L1&amp;#39;s CR3 fails on a nested #VMEXIT, nested_svm_vmexit()<br /> returns an error code that is ignored by most callers, and continues to<br /> run L1 with corrupted state. A sane recovery is not possible in this<br /> case, and HW behavior is to cause a shutdown. Inject a triple fault<br /> instead, and do not return early from nested_svm_vmexit(). Continue<br /> cleaning up the vCPU state (e.g. clear pending exceptions), to handle<br /> the failure as gracefully as possible.<br /> <br /> From the APM:<br /> <br /> Upon #VMEXIT, the processor performs the following actions in order to<br /> return to the host execution context:<br /> <br /> ...<br /> <br /> if (illegal host state loaded, or exception while loading host state)<br /> shutdown<br /> else<br /> execute first host instruction following the VMRUN<br /> <br /> Remove the return value of nested_svm_vmexit(), which is mostly<br /> unchecked anyway.