CVE-2022-4994 KVM: x86: wean fast IN from emulator_pio_in

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: wean fast IN from emulatorpioin Use emulatorpioin directly for fast PIO instead of bouncing through emulatorpioin now that emulatorpioin fills "val" when handling in-kernel PIO. vcpu-arch.pio.count is guaranteed to be...

EUVD-2026-48996

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ensure vendor's exit handler runs before fastpath userspace exits Move the handling of fastpath userspace exits into vendor code to ensure KVM runs vendor specific operations that need to run before userspace gains...

kernel: 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...

EUVD-2026-48656

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: hyper-v: Bound the bank index when querying sparse banks When checking if a VP ID is included in a sparse bank set, explicitly check that the ID can actually be contained in a sparse bank the TLFS allows for a maximum o...

Important: kernel6.18

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: sctp: disable BH before calling udptunnelxmitskb CVE-2026-53070 In the Linux kernel, the following vulnerability has been resolved: bpf: Fix same-register dst/src OOB read and pointer leak in sockops CVE-2026-5307...

RockyLinux 9 : kernel (RLSA-2026:36957)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:36957 advisory. kernel: net/sched: ets: Always remove class from active list before deleting in etsqdiscchange CVE-2025-71066 kernel: KVM: x86: Fix shadow paging...

CVE-2026-46295

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Do IRR scan in kvmapicupdateirr even if PIR is empty Fall back to apicfindhighestvector when PID.ON is set but PIR turns out to be empty, to correctly report the highest pending interrupt from the existing IRR. In a...

CVE-2026-46113 KVM: x86: Fix shadow paging use-after-free due to unexpected GFN

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...

Astra Linux – Vulnerability in Linux

A vulnerability was discovered in the Linux kernel before version 5.9. Arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service soft lockup by triggering the destruction of a large SEV VM, which requires unregistering many encrypted regions. This vulnerability is also known as...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

A issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x8664 lacks consistency checks for CR0 and CR4...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore -EBUSY when checking nested events from vcpublock Ignore -EBUSY when checking nested events after exiting a blocking state. This applies when L2 is active; exiting to userspace will typically result in a spurious...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: KVM: x86: Fixed a stack-out-of-bounds memory access from ioapicwriteindirect. KASAN reports the following issue: BUG: In kvmmakevcpusrequestmask+0x174/0x440 kvm, there is a stack-out-of-bounds situation. A read of size 8 at...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: x86 – Handling of SRCU initialization failures during page track initialization Check the return value of initsrcustruct, which may fail due to OOM conditions when initializing the page track mechanism. Lack of checking lead...

EUVD-2026-27662

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore -EBUSY when checking nested events from vcpublock Ignore -EBUSY when checking nested events after exiting a blocking state while L2 is active, as exiting to userspace will generate a spurious userspace exit,...

CVE-2026-43265

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore -EBUSY when checking nested events from vcpublock Ignore -EBUSY when checking nested events after exiting a blocking state while L2 is active, as exiting to userspace will generate a spurious userspace exit,...

CVE-2026-43265

CVE-2026-43265 affects the Linux kernel KVM for x86. The vulnerability arises when a vCPU is put into a blocking state with an already-injected event or nested run, allowing a user or guest to manipulate vCPU state and trigger a spurious userspace exit (often KVM_EXIT_UNKNOWN) that could crash th...

CVE-2026-43265 KVM: x86: Ignore -EBUSY when checking nested events from vcpu_block()

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore -EBUSY when checking nested events from vcpublock Ignore -EBUSY when checking nested events after exiting a blocking state while L2 is active, as exiting to userspace will generate a spurious userspace exit,...

SUSE CVE-2026-31588

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use scratch field in MMIO fragment to hold small write values When exiting to userspace to service an emulated MMIO write, copy the to-be-written value to a scratch field in the MMIO fragment if the size of the data...

EUVD-2026-17830

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

CVE-2026-23401 KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE When installing an emulated MMIO SPTE, do so after dropping/zapping the existing SPTE if it's shadow-present. While commit a54aa15c6bda3 was right about...