ALSA-2026:13577 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: nvme: avoid double free special payload CVE-2024-41073 kernel: net: qlogic/qede: fix potential out-of-bounds read in qedetpacont and qedetpaend CVE-2025-40252 kernel: crypto: asymmetricke...

AlmaLinux 8 : kernel-rt (ALSA-2026:13578)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:13578 advisory. kernel: nvme: avoid double free special payload CVE-2024-41073 kernel: net: qlogic/qede: fix potential out-of-bounds read in qedetpacont and qedetpaend...

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: nvme: avoid double free special payload CVE-2024-41073 kernel: net: qlogic/qede: fix potential out-of-bounds read in qedetpacont and qedetpaend CVE-2025-40252 kernel: crypto: asymmetricke...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only warnings are issued when overwriting a shadow-present SPTE, specifically when the operation is performed on direct MMUs. This adjustment applies only to MMUs that do not have shadowed gPTEs. Although it’s...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fixed the initialization of the ID register for non-protected pKVM guests In protected mode, the hypervisor maintains a separate instance of the kvm structure for each VM. For non-protected VMs, this structure is...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Clear XSTATEBVi in the guest XSAVE state whenever XFDi=1 When loading the guest XSAVE state via KVMSETXSAVE, and when updating XFD in response to a guest WRMSR, the disabled features in XSTATEBV are cleared to ensure tha...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Do not retire an aborted MMIO instruction Returning an abort to the guest for an unsupported MMIO access is a documented feature of the KVM UAPI. However, it’s clear that this functionality has been tested limitedly, ...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

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

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: Initialize gfntopfncache locks in dedicated helper Move the gfntopfncache lock initialization to another helper and call the new helper during VM/vCPU creation. There are race conditions possible due to the ability of...

[SECURITY] Fedora 43 Update: edk2-20260213-4.fc43

EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications. This package contains sample 64-bit UEFI firmware builds for QEMU and KVM...

KVM: x86: Use scratch field in MMIO fragment to hold small write values

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CVE-2026-31591

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. This vulnerability allows a local user in userspace to manipulate or run a virtual CPU vCPU while its state is being synchronized during the Secure Nested Paging SNP launch process. This improper synchronization ca...

CVE-2026-31588

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. This vulnerability, a use-after-free, occurs when KVM processes Memory-mapped I/O MMIO writes that span across different memory pages, and an internal temporary variable is used. A malicious guest operating system ...

CVE-2026-31558

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. A local attacker could potentially trigger an out-of-bounds memory access by providing a negative 'cpuid' parameter to the 'kvmgetvcpubycpuid' function. This could lead to system instability or potentially other...

CVE-2026-31592

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Protect all of sevmemencregisterregion with kvm-lock Take and hold kvm-lock for before checking sevguest in sevmemencregisterregion, as sevguest isn't stable unless kvm-lock is held or KVM can guarantee KVMSEVINIT2 has...

CVE-2026-31564

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix base address calculation in kvmeiointcregsaccess In function kvmeiointcregsaccess, the register base address is caculated from array base address plus offset, the offset is absolute value from the base address...

CVE-2026-31553

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix the descriptor address in kvmatswapdesc Using "u64 user hva + offset" to get the virtual addresses of S1/S2 descriptors looks really wrong, if offset is not zero. What we want to get for swapping is hva + offset,...

EUVD-2026-25486

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-2026-31591 KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as allowing userspace to manipulate and/or run a vCPU while its state is being...

CVE-2026-31590

The CVE-2026-31590 issue affects the Linux kernel KVM SEV path: sev_pin_memory() would WARN when npages overflowed an int due to KVM_MEMORY_ENCRYPT_REG_REGION with a large size, enabling a local user to trigger a harmless warning via userspace input (e.g., addr=0, size=-1ul). The root cause is th...