CVE-2026-20819 Windows Virtualization-Based Security (VBS) Information Disclosure Vulnerability

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CVE-2026-20819 Windows Virtualization-Based Security (VBS) Information Disclosure Vulnerability

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CVE-2026-20819

Untrusted pointer dereference in Windows Virtualization-Based Security VBS Enclave allows an authorized attacker to disclose information locally...

CVE-2026-20819

CVE-2026-20819 is a local-information-disclosure vulnerability in Windows Virtualization-Based Security (VBS) Enclave. The root cause is an untrusted pointer dereference in the VBS Enclave, enabling an authorized attacker to disclose information locally. Public details identify affected Windows b...

CVE-2025-68810

In the Linux kernel, the following vulnerability has been resolved: KVM: Disallow toggling KVMMEMGUESTMEMFD on an existing memslot Reject attempts to disable KVMMEMGUESTMEMFD on a memslot that was initially created with a guestmemfd binding, as KVM doesn't support toggling KVMMEMGUESTMEMFD on...

Windows Virtualization-Based Security (VBS) Information Disclosure Vulnerability

Untrusted pointer dereference in Windows Virtualization-Based Security VBS Enclave allows an authorized attacker to disclose information locally...

Windows Virtualization-Based Security (VBS) Information Disclosure Vulnerability

Untrusted pointer dereference in Windows Virtualization-Based Security VBS Enclave allows an unauthorized attacker to disclose information locally...

Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

Untrusted pointer dereference in Windows Virtualization-Based Security VBS Enclave allows an authorized attacker to elevate privileges locally...

CVE-2025-68810 KVM: Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot

In the Linux kernel, the following vulnerability has been resolved: KVM: Disallow toggling KVMMEMGUESTMEMFD on an existing memslot Reject attempts to disable KVMMEMGUESTMEMFD on a memslot that was initially created with a guestmemfd binding, as KVM doesn't support toggling KVMMEMGUESTMEMFD on...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: KVM: guestmemfd: Remove bindings on memslot deletion when gmem is dying When unbinding a memslot from a guestmemfd instance, remove the bindings even if the guestmemfd file is dying, i.e., even if its file refcount has gone to...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the virtio-net device in QEMU. When the RSS feature is enabled on the virtio-net network card, the indirectionstable data within RSS becomes controllable. Setting values that are excessively large may lead to an index out-of-bounds issue, potentially resulting in a heap...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Forces the legacy PCI hole to be mapped as UC when overriding MTRRs for TDX/SNP. When running as an SNP or TDX guest under KVM, the legacy PCI hole—that is, the memory between Top of Lower Usable DRAM and 4 GiB—is forced...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Skip fastpath emulation on VM-Exit if next RIP isn’t valid Skip the WRMSR and HLT fastpaths in SVM’s VM-Exit handler if the next RIP isn’t valid, for example, because KVM is running with nrips=false. SVM must decode and...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Do not recheck L1 intercepts when completing userspace I/O When completing emulation of instructions that generate a userspace exit for I/O, do not recheck L1 intercepts since KVM has already completed that phase of...

MiracleLinux 9 : kernel-5.14.0-503.19.1.el9_5 (AXSA:2025-9562:06)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-9562:06 advisory. kernel: Bluetooth: l2cap: fix null-ptr-deref in l2capchantimeout CVE-2024-27399 kernel: bpf: Add BPFPROGTYPECGROUPSKB attach type enforcement in...

Microsoft Windows Virtualization-Based Security Enclave 安全漏洞

Microsoft Windows Virtualization-Based Security Enclave Microsoft Windows VBS Enclave is a software-based trusted execution environment in the address space of host applications from Microsoft Corporation USA. A security vulnerability exists in Microsoft Windows Virtualization-Based Security...

Microsoft Windows Virtualization-Based Security Enclave 安全漏洞

Microsoft Windows Virtualization-Based Security Enclave Microsoft Windows VBS Enclave is a software-based trusted execution environment in the address space of host applications from Microsoft Corporation USA. A security vulnerability exists in Microsoft Windows Virtualization-Based Security...

KLA90840 Multiple vulnerabilities were found in Microsoft Windows

Multiple vulnerabilities were found in Microsoft Windows. Malicious users can exploit these vulnerabilities to gain privileges, execute arbitrary code, bypass security restrictions, obtain sensitive information, cause denial of service, spoof user interface. Below is a complete list of...

PT-2026-2721

Name of the Vulnerable Software and Affected Versions Windows Virtualization-Based Security VBS Enclave affected versions not specified Description A heap-based buffer overflow exists within the Windows Virtualization-Based Security VBS Enclave component. This condition allows a locally authorize...

PT-2026-2737

CVE-2026-20935 Untrusted pointer dereference in Windows Virtualization-Based Security VBS Enclave allows an unauthorized attacker to disclose information locally. https://t.co/ILlyRKWAUb...