CVE-2026-46032

Summary: CVE-2026-46032 relates to Linux kernel KVM nSVM, where a failed restore of L1 host CR3 during a nested VMEXIT could leave L1 with corrupted state and trigger a triple fault instead of a clean recovery. The fix removes the nested_svm_vmexit return value and ensures proper cleanup, resulti...

CVE-2026-46032 KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Triple fault if restore host CR3 fails on nested VMEXIT If loading L1's CR3 fails on a nested VMEXIT, nestedsvmvmexit returns an error code that is ignored by most callers, and continues to run L1 with corrupted state....

CVE-2026-46032

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Triple fault if restore host CR3 fails on nested VMEXIT If loading L1's CR3 fails on a nested VMEXIT, nestedsvmvmexit returns an error code that is ignored by most callers, and continues to run L1 with corrupted state....

EUVD-2026-32395

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Add missing save/restore handling of LBR MSRs MSRIA32DEBUGCTLMSR and LBR MSRs are currently not enumerated by KVMGETMSRINDEXLIST, and LBR MSRs cannot be set with KVMSETMSRS. So save/restore is completely broken. Fix it ...

CVE-2026-46014 KVM: SVM: Add missing save/restore handling of LBR MSRs

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Add missing save/restore handling of LBR MSRs MSRIA32DEBUGCTLMSR and LBR MSRs are currently not enumerated by KVMGETMSRINDEXLIST, and LBR MSRs cannot be set with KVMSETMSRS. So save/restore is completely broken. Fix it ...

CVE-2026-46014

CVE-2026-46014 is a Linux kernel vulnerability affecting KVM/SVM where save/restore of LBR and DEBUGCTL MSRs was incomplete. The issue arose because MSR_IA32_DEBUGCTLMSR and LBR MSRs were not included in the msrs_to_save_base list and could not be set/restored properly, breaking save/restore acro...

CVE-2026-45987

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Sync interrupt shadow to cached vmcb12 after VMRUN of L2 After VMRUN in guest mode, nestedsynccontrolfromvmcb02 syncs fields written by the CPU from vmcb02 to the cached vmcb12. This is because the cached vmcb12 is use...

CVE-2026-45987

Technical details about CVE-2026-45987 are not publicly provided in the connected documents. No explicit affected products, root cause, or fixes are present beyond generic patch notes; monitor for updates.

CVE-2026-45987 KVM: nSVM: Sync interrupt shadow to cached vmcb12 after VMRUN of L2

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Sync interrupt shadow to cached vmcb12 after VMRUN of L2 After VMRUN in guest mode, nestedsynccontrolfromvmcb02 syncs fields written by the CPU from vmcb02 to the cached vmcb12. This is because the cached vmcb12 is use...

CVE-2026-45987 KVM: nSVM: Sync interrupt shadow to cached vmcb12 after VMRUN of L2

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Sync interrupt shadow to cached vmcb12 after VMRUN of L2 After VMRUN in guest mode, nestedsynccontrolfromvmcb02 syncs fields written by the CPU from vmcb02 to the cached vmcb12. This is because the cached vmcb12 is use...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the unintercepted VMMCALL in KVM nSVM. This vulnerability may lead to unauthorized supercalls at...

PT-2026-43881

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.0.11-1.1 Description In the KVM SVM component, there is a failure in the save and restore handling of Last Branch Record LBR Model Specific Registers MSRs. Specifically, MSR IA32 DEBUGCTLMSR and LBR MSRs are no...

CVE-2026-46082

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Inject UD for INVLPGA if EFER.SVME=0 INVLPGA should cause a UD when EFER.SVME is not set. Add a check to properly inject UD when EFER.SVME=0. sean: tag for stable@...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the Intel VT-d driver failing to clear the Present bit before deleting PASID table entries. This...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from KVM nSVM failing to synchronize the interrupt shadow with the cached vmcb12 after VMRUN,...

Linux Distros Unpatched Vulnerability : CVE-2026-46014

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: SVM: Add missing save/restore handling of LBR MSRs MSRIA32DEBUGCTLMSR and LBR MSRs are currently not enumerated by KVMGETMSRINDEXLIST, and LBR MSRs cannot ...

Linux Distros Unpatched Vulnerability : CVE-2026-46032

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: nSVM: Triple fault if restore host CR3 fails on nested VMEXIT If loading L1's CR3 fails on a nested VMEXIT, nestedsvmvmexit returns an error code that is...

PT-2026-43943

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM nSVM component where a VMMCALL is not properly handled when L2 is active, L1 does not want to intercept the VMMCALL, nested svm l2 tlb flush enabled is true, a...

CVE-2026-46071

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Avoid clearing VMCBLBR in vmcb12 svmcopylbrs always marks VMCBLBR dirty in the destination VMCB. However, nestedsvmvmexit uses it to copy LBRs to vmcb12, and clearing clean bits in vmcb12 is not architecturally defined...

CVE-2026-45944

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clear Present bit before tearing down context entry When tearing down a context entry, the current implementation zeros the entire 128-bit entry using multiple 64-bit writes. This creates a window where the hardware c...