CVE-2025-40026 KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't recheck L1 intercepts when completing userspace I/O When completing emulation of instruction that generated a userspace exit for I/O, don't recheck L1 intercepts as KVM has already finished that phase of instructi...

CVE-2025-38506

In the Linux kernel, the following vulnerability has been resolved: KVM: Allow CPU to reschedule while setting per-page memory attributes When running an SEV-SNP guest with a sufficiently large amount of memory 1TB+, the host can experience CPU soft lockups when running an operation in...

Linux Distros Unpatched Vulnerability : CVE-2022-49557

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: x86/fpu: KVM: Set the base guest FPU uABI size to sizeofstruct kvmxsave Set the starting uAB...

Linux Distros Unpatched Vulnerability : CVE-2021-47450

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix host stage-2 PGD refcount The KVM page-table library refcounts the pages of...

Linux Distros Unpatched Vulnerability : CVE-2021-46977

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Disable preemption when probing user return MSRs Disable preemption when probing a...

Linux Distros Unpatched Vulnerability : CVE-2022-49932

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: VMX: Do all initialization before exposing /dev/kvm to userspace Call kvminit only after all setup is complete, as kvminit exposes /dev/kvm to userspace an...

Moderate: virt:rhel and virt-devel:rhel security update

Kernel-based Virtual Machine KVM offers a full virtualization solution forLinux on numerous hardware platforms. The virt:rhel module contains packageswhich provide user-space components used to run virtual machines using KVM.The packages also provide APIs for managing and interacting with the...

PT-2025-44093

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.16.0-rc5-c1610d2d66b1-next-vm Description The Linux kernel contains an issue within the KVM component related to handling L1 intercepts during userspace I/O completion. Specifically, the kernel may recheck L1...

KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception

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UBUNTU-CVE-2025-37996

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix uninitialized memcache pointer in usermemabort Commit fce886a60207 "KVM: arm64: Plumb the pKVM MMU in KVM" made the initialization of the local memcache variable in usermemabort conditional, leaving a codepath whe...

UBUNTU-CVE-2025-23141

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire SRCU in KVMGETMPSTATE to protect guest memory accesses Acquire a lock on kvm-srcu when userspace is getting MP state to handle a rather extreme edge case where "accepting" APIC events, i.e. processing pending IN...

UBUNTU-CVE-2022-49568

In the Linux kernel, the following vulnerability has been resolved: KVM: Don't null dereference ops-destroy A KVM device cleanup happens in either of two callbacks: 1 destroy which is called when the VM is being destroyed; 2 release which is called when a device fd is closed. Most KVM devices use...

The vulnerability of the KVM kernel component of the Linux operating system, which allows a hacker to gain access to confidential information

The vulnerability of the Linux operating system’s KVM kernel component is related to excessive data output in the vmxgetperfcapabilities function. Exploiting this vulnerability can allow an attacker to gain access to confidential information...

kernel: KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status The Linux kernel CVE team has assigned CVE-2024-26990 to this issue. Upstream advisory:...

CVE-2024-50139 KVM: arm64: Fix shift-out-of-bounds bug

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix shift-out-of-bounds bug Fix a shift-out-of-bounds bug reported by UBSAN when running VM with MTE enabled host kernel. UBSAN: shift-out-of-bounds in arch/arm64/kvm/sysregs.c:1988:14 shift exponent 33 is too large f...

KVM: s390: fix validity interception issue when gisa is switched off

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The vulnerability of the `fixup_guest_exit` function in the arm64 component of the KVM virtualization subsystem of the Linux operating system allows a hacker to trigger a service failure.

The vulnerability of the fixupguestexit function in the arm64 component of the KVM virtualization subsystem of the Linux operating system is related to the use of an outdated value of esr when a SError exception occurs. Exploiting this vulnerability can allow an attacker to cause a service failur...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a forced departure from the nested virtualizer when the KVM:x86 module switches SMM states...

SUSE CVE-2024-36953

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-v2: Check for non-NULL vCPU in vgicv2parseattr vgicv2parseattr is responsible for finding the vCPU that matches the user-provided CPUID, which of course may not be valid. If the ID is invalid, kvmgetvcpubyid...

The vulnerability of the kvm_io_bus_unregister_dev() function in the KVM subsystem of Linux operating systems allows a attacker to cause a service failure.

The vulnerability of the kvmiobusunregisterdev function in the KVM subsystem of Linux operating systems is related to errors in pointer assignment during device registration. Exploiting this vulnerability can allow an attacker to cause system failures...