Linux Distros Unpatched Vulnerability : CVE-2026-64561

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: x86: Check for invalid/obsolete root after making MMU pages available Check for a stale page fault, i.e. for an invalid and/or obsolete root, after making...

RHEL 8 : kernel (RHSA-2026:49857)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:49857 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: ipc: limit nextid allocation to the...

PT-2026-67669

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Hide shadow VMCS right after VMCLEAR free nested frees the shadow VMCS while vmcs01 still points to it. But because it is asynchronous with respect to loaded vmcs clear, the vCPU might migrate before the pointer is...

Unbreakable Enterprise kernel security update

5.4.17-2136.358.2 - xfs: resample the data fork mapping after cycling ILOCK Darrick J. Wong Orabug: 39776792 CVE-2026-64600 - net: Work around Marvell NIC TX stalls Venkat Venkatsubra Orabug: 39765820 5.4.17-2136.358.1 - KVM: x86: Fix shadow paging use-after-free due to unexpected role Paolo...

kernel: KVM: x86: Check for invalid/obsolete root *after* making MMU pages available

A flaw was found in KVM in the Linux kernel. This vulnerability occurs due to improper validation of memory management unit MMU page roots after these pages are made available. An attacker could exploit this by triggering a scenario where KVM attempts to map memory into an invalid root, causing...

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...

kernel: KVM: x86: Check for invalid/obsolete root *after* making MMU pages available

A flaw was found in KVM in the Linux kernel. This vulnerability occurs due to improper validation of memory management unit MMU page roots after these pages are made available. An attacker could exploit this by triggering a scenario where KVM attempts to map memory into an invalid root, causing...

kernel: KVM: x86: Check for invalid/obsolete root *after* making MMU pages available

A flaw was found in KVM in the Linux kernel. This vulnerability occurs due to improper validation of memory management unit MMU page roots after these pages are made available. An attacker could exploit this by triggering a scenario where KVM attempts to map memory into an invalid root, causing...

SUSE CVE-2026-42493

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives HVM/PVH: HAP, PV: shim are commonly available, the decision was to deprecate the functionality, while still retainin...

CVE-2026-47876 VMXNET3 out-of-bounds write vulnerability

VMware ESX contains an out-of-bounds write vulnerability in the VMXNET3 virtual network adapter. A malicious actor with local administrative privileges on a virtual machine with VMXNET3 virtual network adapter may exploit this issue to execute code on the host. Non VMXNET3 virtual adapters are no...

UBUNTU-CVE-2022-4994

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...

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...

CVE-2026-64513

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM for x86 architectures. When the apicupdateppr function does not find a deliverable interrupt, it fails to recompute the CR8 intercept, leading to a stale Task Priority Register Threshold TPRTHRESHOLD. This issue can cause a...

SUSE-SU-2026:22981-1 Security update for the Linux Kernel (Live Patch 13 for SUSE Linux Enterprise 16)

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.34.1 fixes various security issues: The following security issues were fixed: - CVE-2026-53359: KVM: x86: Fix shadow paging use-after-free due to unexpected role bsc1270060. - CVE-2026-53366: ipv4: account for fraggap on the paged...

CVE-2026-64310

A flaw was found in the Linux kernel's crypto: ccp component. A local user, by triggering specific SEV Secure Encrypted Virtualization input/output control ioctl operations when SEV initialization fails and Kernel-based Virtual Machine KVM is actively running virtual machines, could cause the...

Linux Distros Unpatched Vulnerability : CVE-2022-4994

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: x86: wean fast IN from emulatorpioin Use emulatorpioin directly for fast PIO instead of bouncing through emulatorpioin now that emulatorpioin fills val whe...

CVE-2026-64308

A flaw was found in the Linux kernel's crypto: ccp module, which handles AMD Secure Encrypted Virtualization SEV and Secure Nested Paging SNP features. A local user, by sending specific commands through the /dev/sev interface, could exploit improper initialization handling. If SEV initialization...

kernel: KVM: x86: Check for invalid/obsolete root *after* making MMU pages available

A flaw was found in KVM in the Linux kernel. This vulnerability occurs due to improper validation of memory management unit MMU page roots after these pages are made available. An attacker could exploit this by triggering a scenario where KVM attempts to map memory into an invalid root, causing...

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...

CVE-2026-64555

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM for ARM64 architecture, specifically affecting nested virtualization. The kvmhyphandlemops function, responsible for handling certain virtualization operations, incorrectly restored the SPSREL2 register. This occurred because...