CVE-2024-46830

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire kvm-srcu when handling KVMSETVCPUEVENTS Grab kvm-srcu when processing KVMSETVCPUEVENTS, as KVM will forcibly leave nested VMX/SVM if SMM mode is being toggled, and leaving nested VMX reads guest memory. Note,...

SUSE CVE-2024-41070

In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Book3S HV: Prevent UAF in kvmspaprtceattachiommugroup Al reported a possible use-after-free UAF in kvmspaprtceattachiommugroup. It looks up stt from tablefd, but then continues to use it after doing fdput on the returne...

CVE-2024-40953 KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin()

In the Linux kernel, the following vulnerability has been resolved: KVM: Fix a data race on lastboostedvcpu in kvmvcpuonspin Use READ,WRITEONCE to access kvm-lastboostedvcpu to ensure the loads and stores are atomic. In the extremely unlikely scenario the compiler tears the stores, it's...

CVE-2022-48763

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Forcibly leave nested virt when SMM state is toggled Forcibly leave nested virtualization operation if userspace toggles SMM state via KVMSETVCPUEVENTS or KVMSYNCX86EVENTS. If userspace forces the vCPU out of SMM while...

The vulnerability of the sev_mem_enc_register_region() function in the Linux operating system’s KVM kernel component, which allows a hacker to cause a service failure

The vulnerability of the sevmemencregisterregion function in the arch/x86/kvm/svm/sev.c module of the Linux kernel’s KVM component is related to the reutilization of previously freed memory. Exploiting this vulnerability could allow an attacker to cause a service failure...

CVE-2021-47390

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix stack-out-of-bounds memory access from ioapicwriteindirect KASAN reports the following issue: BUG: KASAN: stack-out-of-bounds in kvmmakevcpusrequestmask+0x174/0x440 kvm Read of size 8 at addr ffffc9001364f638 by tas...

CVE-2021-47341

In the Linux kernel, the following vulnerability has been resolved: KVM: mmio: Fix use-after-free Read in kvmvmioctlunregistercoalescedmmio BUG: KASAN: use-after-free in kvmvmioctlunregistercoalescedmmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalescedmmio.c:183 Read of size 8 at addr...

CVE-2021-47341

In the Linux kernel, the following vulnerability has been resolved: KVM: mmio: Fix use-after-free Read in kvmvmioctlunregistercoalescedmmio BUG: KASAN: use-after-free in kvmvmioctlunregistercoalescedmmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalescedmmio.c:183 Read of size 8 at addr...

CVE-2024-35804 KVM: x86: Mark target gfn of emulated atomic instruction as dirty

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Mark target gfn of emulated atomic instruction as dirty When emulating an atomic access on behalf of the guest, mark the target gfn dirty if the CMPXCHG by KVM is attempted and doesn't fault. This fixes a bug where KVM...

CVE-2024-26976

In the Linux kernel, the following vulnerability has been resolved: KVM: Always flush async PF workqueue when vCPU is being destroyed Always flush the per-vCPU async PF workqueue when a vCPU is clearing its completion queue, e.g. when a VM and all its vCPUs is being destroyed. KVM must ensure tha...

CVE-2024-26991 KVM: x86/mmu: x86: Don't overflow lpage_info when checking attributes

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: x86: Don't overflow lpageinfo when checking attributes Fix KVMSETMEMORYATTRIBUTES to not overflow lpageinfo array and trigger KASAN splat, as seen in the privatememconversionstest selftest. When memory attributes ar...

CVE-2024-29008 Apache CloudStack: The extraconfig feature can be abused to load hypervisor resources on a VM instance

A problem has been identified in the CloudStack additional VM configuration extraconfig feature which can be misused by anyone who has privilege to deploy a VM instance or configure settings of an already deployed VM instance, to configure additional VM configuration even when the feature is not...

CVE-2023-52597 KVM: s390: fix setting of fpc register

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: fix setting of fpc register kvmarchvcpuioctlsetfpu allows to set the floating point control fpc register of a guest cpu. The new value is tested for validity by temporarily loading it into the fpc register. This may le...

CVE-2021-47092

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Always clear vmx-fail on emulationrequired Revert a relatively recent change that set vmx-fail if the vCPU is in L2 and emulationrequired is true, as that behavior is completely bogus. Setting vmx-fail and synthesizing ...

CVE-2021-47061

In the Linux kernel, the following vulnerability has been resolved: KVM: Destroy I/O bus devices on unregister failure after sync'ing SRCU If allocating a new instance of an I/O bus fails when unregistering a device, wait to destroy the device until after all readers are guaranteed to see the new...

CLSA-2024-1709203226 kernel: Fix of 7 CVEs

KVM: nSVM: avoid picking up unsupported bits from L2 in intctl CVE-2021-3653 CVE-2021-3653 - xen/netfront: fix leaking data in shared pages CVE-2022-33740 - xfs: fix up non-directory creation in SGID directories CVE-2021-4037 - netsched: clsroute: remove from list when handle is 0 CVE-2022-2588 -...

CVE-2021-46978

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Always make an attempt to map eVMCS after migration When enlightened VMCS is in use and nested state is migrated with vmxgetnestedstate/vmxsetnestedstate KVM can't map evmcs page right away: evmcs gpa is not 'struct...

CVE-2021-47008 KVM: SVM: Make sure GHCB is mapped before updating

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Make sure GHCB is mapped before updating Access to the GHCB is mainly in the VMGEXIT path and it is known that the GHCB will be mapped. But there are two paths where it is possible the GHCB might not be mapped. The...

CVE-2021-46907

Removed by vendor...

PT-2023-4323 · Linux +7 · Linux Kernel +7

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A flaw was found in KVM AMD Secure Encrypted Virtualization SEV in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition...