kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O

A flaw was found in the Kernel-based Virtual Machine KVM for x86. This vulnerability occurs when KVM incorrectly re-checks Level 1 L1 intercepts during the completion of userspace I/O emulation for a Level 2 L2 instruction. If the L1 or host userspace modifies I/O interception settings during thi...

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...

CVE-2026-64247 KVM: x86: hyper-v: Bound the bank index when querying sparse banks

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...

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

A flaw was found in the Kernel-based Virtual Machine KVM for x86. This vulnerability occurs when KVM incorrectly re-checks Level 1 L1 intercepts during the completion of userspace I/O emulation for a Level 2 L2 instruction. If the L1 or host userspace modifies I/O interception settings during thi...

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...

CVE-2026-49744

Kernel software installed and running inside a Guest VM may post improper commands to the GPU Firmware to trigger a write of data outside the Guest's virtualised GPU memory. Out of bounds accesses triggered by malware introduced to a Guest KMD could allow privilege escalation which escapes...

CVE-2026-49744

A vulnerability in the GPU DDK allows kernel software running inside a Guest VM to post improper commands to the GPU Firmware . This triggers an out-of-bounds access (specifically an unchecked ui32TracePointer in rgxfw_log_ex()), resulting in a data write outside the Guest's virtualized GPU memor...

EUVD-2026-48533

Kernel software installed and running inside a Guest VM may post improper commands to the GPU Firmware to trigger a write of data outside the Guest's virtualised GPU memory. Out of bounds accesses triggered by malware introduced to a Guest KMD could allow privilege escalation which escapes...

CVE-2026-49744

Kernel software installed and running inside a Guest VM may post improper commands to the GPU Firmware to trigger a write of data outside the Guest's virtualised GPU memory. Out of bounds accesses triggered by malware introduced to a Guest KMD could allow privilege escalation which escapes...

SUSE CVE-2026-63863

In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: Fix unbalanced unlock in drmgpusvmscanmm There is a unbalanced lock/unlock to gpusvm notifier lock: 931.045868 ===================================== 931.046509 WARNING: bad unlock balance detected! 931.047149...

PT-2026-64265

Kernel software installed and running inside a Guest VM may post improper commands to the GPU Firmware to trigger a write of data outside the Guest's virtualised GPU memory. Out of bounds accesses triggered by malware introduced to a Guest KMD could allow privilege escalation which escapes...

CVE-2026-49744: Use of Out-of-range Pointer Offset

Kernel software installed and running inside a Guest VM may post improper commands to the GPU Firmware to trigger a write of data outside the Guest's virtualised GPU memory. Out of bounds accesses triggered by malware introduced to a Guest KMD could allow privilege escalation which escapes...

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: KVM: x86: Don't recheck L1 intercepts when completing userspace I/O CVE-2025-40026 kernel: xfrm single-frag length not properly limited kernel: dm log: fix out-of-bounds write due to...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Requires the use of a scratch area if GHCB v2+ is in use According to the GHCB specification, when using GHCB v2+, it is required that the software scratch area resides in the GHCB’s shared buffer. Note that features li...

kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM x86 shadow paging mechanism. This vulnerability occurs when a host page directory entry PDE mapping is changed from within the guest, leading to an unexpected role mismatch in shadow paging. This mismatch can cause a...

RHEL 9 : kpatch-patch-5_14_0-427_100_1, kpatch-patch-5_14_0-427_113_1, kpatch-patch-5_14_0-427_126_1, kpatch-patch-5_14_0-427_68_2, and kpatch-patch-5_14_0-427_84_1 (RHSA-2026:44006)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:44006 advisory. This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel. This patc...

amdgpu_amdkfd_gpuvm Heap Buffer Overflow DoS

The vulnerability of the kfdmemdmamapuserptr function in the drivers/gpu/drm/amd/amdgpu/amdgpuamdkfdgpuvm.c source code of the Direct Rendering Infrastructure DRI driver for AMD GPU cores in the Linux operating system is related to improper memory release mechanisms memory leaks. Exploiting this...

Important: Red Hat Security Advisory: OpenShift Virtualization v4.22 Images

Red Hat OpenShift Virtualization release v4.22 is now available with updates to packages and images that fix several bugs and add enhancements. OpenShift Virtualization is Red Hat's virtualization solution designed for Red Hat OpenShift Container Platform. This advisory contains OpenShift...

CVE-2026-60150

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization component: Core. The supported version that is affected is 7.2.12. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle V...