kernel security update

An update is available for kernel. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The kernel packages contain the Linux kernel, the core of any Linux operating...

CVE-2026-46131

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

UBUNTU-CVE-2026-46131

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

EUVD-2026-32774

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix pin leak and publication ordering in pkvminitvcpu Two bugs exist in the vCPU initialisation path: 1. If a check fails after hyppinsharedmem succeeds, the cleanup path jumps to 'unlock' without calling unpinhostvcp...

CVE-2026-46131

The CVE-2026-46131 entry concerns the Linux kernel KVM/x86 hypervisor path. It states a vulnerability in the slow flush hypercalls where the is_guest_mode(vcpu) check is incorrect; translate_nested_gpa() is only valid if an L2 guest is running with nested EPT/NPT enabled. The fix uses the same co...

CVE-2026-46131

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

CVE-2026-46131 KVM: x86: check for nEPT/nNPT in slow flush hypercalls

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

CVE-2026-46113

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN The shadow MMU computes GFNs for direct shadow pages using sp-gfn plus the SPTE index. This assumption breaks for shadow paging if the guest page tables are modifie...

SUSE CVE-2026-45894

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clear Present bit before tearing down PASID entry The Intel VT-d Scalable Mode PASID table entry consists of 512 bits 64 bytes. When tearing down an entry, the current implementation zeros the entire 64-byte structure...

SUSE 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...

SUSE CVE-2026-46014

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 ...

SUSE 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....

SUSE CVE-2026-46059

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Always use NextRIP as vmcb02's NextRIP after first L2 VMRUN For guests with NRIPS disabled, L1 does not provide NextRIP when running an L2 with an injected soft interrupt, instead it advances the current RIP before...

SUSE 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-2026-45894

A flaw was found in the Linux kernel's Intel VT-d Virtualization Technology for Directed I/O Scalable Mode. When a Process Address Space ID PASID table entry is being removed, the system may attempt to clear the entry before properly signaling to the hardware that the entry is no longer active...

CVE-2026-45944

A flaw was found in the Linux kernel's IOMMU Input/Output Memory Management Unit VT-d Virtualization Technology for Directed I/O component. When a context entry is being torn down, the 'Present' bit might not be cleared before other parts of the entry are zeroed. This can lead to the hardware...

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 incorrect implementation of the isguestmode function in KVM x86’s slow refresh supercall...

PT-2026-44294

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified openSUSE Tumbleweed versions prior to kernel-devel-7.0.11-1.1 Description A memory leak occurs in the Linux kernel within the RISC-V KVM implementation. Specifically, in the kvm riscv vcpu alloc...

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 a memory leak during the vector context allocation in RISC-V virtualization. This vulnerability m...

CVE-2026-45987

A flaw was found in the KVM Kernel-based Virtual Machine nSVM component of the Linux kernel. This vulnerability occurs when the interrupt shadow state is not correctly synchronized to the cached Virtual Machine Control Block VMCB after a Level 2 L2 guest virtual machine VM execution. A local...