CVE-2026-46171

The CVE pertains to the Linux kernel (RISC-V KVM): in kvm_riscv_vcpu_alloc_vector_context, if the second kzalloc (host_context.vector.datap) fails, the first allocation (guest_context.vector.datap) is leaked. The issue was resolved by freeing the first allocation before returning. Affected/impact...

PT-2026-44270

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description Two issues exist in the vCPU initialization path of the KVM arm64 component. First, a failure occurring after hyp pin shared mem succeeds can lead to a pin leak, where pin references on...

CVE-2026-46014

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM and Secure Virtual Machine SVM components. This vulnerability is due to missing save and restore handling for Last Branch Record LBR Model Specific Registers MSRs and MSRIA32DEBUGCTLMSR. A local attacker with access to a...

CVE-2026-46082

A flaw was found in the Linux kernel's virtualization component, known as KVM. This vulnerability arises when a specific instruction, INVLPGA, is used in a virtualized environment without the proper security setting EFER.SVME. The system fails to trigger an expected error, which could allow a loc...

CVE-2026-46071

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Avoid clearing VMCBLBR in vmcb12 svmcopylbrs always marks VMCBLBR dirty in the destination VMCB. However, nestedsvmvmexit uses it to copy LBRs to vmcb12, and clearing clean bits in vmcb12 is not architecturally defined...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring Syst...

RHEL 10 : kernel (RHSA-2026:18134)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:18134 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: tcpbpf: Fix the skmemuncharg...

CVE-2026-43315

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Remove a user-triggerable WARN on nestedsvmloadcr3 succeeding Drop the WARN in svmsetnestedstate on nestedsvmloadcr3 failing as it is trivially easy to trigger from userspace by modifying CPUID after loading CR3. E.g...

CVE-2026-43315

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Remove a user-triggerable WARN on nestedsvmloadcr3 succeeding Drop the WARN in svmsetnestedstate on nestedsvmloadcr3 failing as it is trivially easy to trigger from userspace by modifying CPUID after loading CR3. E.g...

kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. A local attacker with privileges on the host system could exploit a vulnerability in how KVM handles shadow page table entries SPTEs during memory-mapped I/O MMIO operations. By manipulating guest page table entrie...

kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. A local attacker with privileges on the host system could exploit a vulnerability in how KVM handles shadow page table entries SPTEs during memory-mapped I/O MMIO operations. By manipulating guest page table entrie...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: RISC-V: KVM: A stack overflow issue was fixed when loading vlenb. The user-space load mechanism can place up to 2048 bits into the xlen bit stack buffer. Since we only need the xlen bits, we check the size of the buffer in advanc...

Astra Linux - уязвимость в linux, linux-5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Book3S HV: Fixed stack handling in idlekvmstartguest In commit 10d91611f426 “powerpc/64s: Reimplemented the book3s idle code in C”, kvmstartguest became idlekvmstartguest. The old code allocated a stack frame on the...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerabilities have been resolved: x86/fpu: KVM: Set the base guest FPU uABI size to sizeofstruct kvmxsave. The starting uABI size of KVM’s guest FPU is set to ‘struct kvmxsave’, which corresponds to KVM’s historical uABI size. When saving the FPU state for a...

CVE-2026-31593

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine virtualization module. When Secure Nested Paging SNP is enabled, an attempt to update the state of an already running and encrypted virtual machine can cause the host system to crash. This vulnerability leads to a Denial of...

CVE-2026-31590

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Drop WARN on large size for KVMMEMORYENCRYPTREGREGION Drop the WARN in sevpinmemory on npages overflowing an int, as the WARN is comically trivially to trigger from userspace, e.g. by doing: struct kvmencregion range =...

CVE-2026-31593

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Reject attempts to sync VMSA of an already-launched/encrypted vCPU Reject synchronizing vCPU state to its associated VMSA if the vCPU has already been launched, i.e. if the VMSA has already been encrypted. On a host wit...

CVE-2026-31590 KVM: SEV: Drop WARN on large size for KVM_MEMORY_ENCRYPT_REG_REGION

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Drop WARN on large size for KVMMEMORYENCRYPTREGREGION Drop the WARN in sevpinmemory on npages overflowing an int, as the WARN is comically trivially to trigger from userspace, e.g. by doing: struct kvmencregion range =...

CVE-2026-31564

CVE-2026-31564 (LoongArch KVM) : The Linux kernel fix addresses a faulty address calculation in the LoongArch KVM implementation, specifically in kvm_eiointc_regs_access(). The code previously derived the register base address by adding an offset to an array base address treated as a u64, which c...