CVE-2021-3656-Demo

CVE-2021-3656: This issue is caused by missing validation of the the virtext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS Virtual VMLOAD/VMSAVE for the L2 guest. Under these circumstances, the L2 guest is able to run VMLOAD/VMSAVE unintercepted, and...

EUVD-2026-97641

SurrealDB 3.1.0 before 3.3.0 lets Surrealism modules exhaust server memory because module stdout/stderr lines are buffered unbounded in host memory, bypassing the configured module memory limit. An attacker can run an Owner-installed malicious module that writes output without newlines, crashing...

GHSA-489W-W794-JQ94 vm2: NodeVM zlib Buffers expose pooled host memory across the VM boundary

Summary When an application explicitly exposes Node's zlib module through vm2's NodeVM builtin allowlist, an untrusted guest can obtain a pool-backed host Buffer from zlib.deflateSync, create a full-width view of its backing ArrayBuffer, read bytes outside the compressed result, and flip a byte i...

vm2: NodeVM zlib Buffers expose pooled host memory across the VM boundary

Summary When an application explicitly exposes Node's zlib module through vm2's NodeVM builtin allowlist, an untrusted guest can obtain a pool-backed host Buffer from zlib.deflateSync, create a full-width view of its backing ArrayBuffer, read bytes outside the compressed result, and flip a byte i...

kernel: nvme-tcp: fix host memory disclosure on R2T for a read command

A flaw was found in the Linux kernel's NVMe Non-Volatile Memory Express over TCP nvme-tcp component. A malicious NVMe controller can exploit this vulnerability by sending a Ready to Transfer R2T command for a read request. The host system, failing to properly validate the request direction, will...

Excessive allocated memory on the host when guests don't have stdio

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gqmc-89g8-p25r For more information see the GitHub-hosted security advisory...

kernel security, bug fix, and enhancement update

6.12.0-211.60.1 - Add new Oracle Linux Driver Signing key 1 certificate Orabug: 37985782 - Disable UKI signing Orabug: 36571828 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list...

AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1743193221)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1743193221 advisory. - In the Linux kernel, the following vulnerability has been resolved: asix: fix uninit-value in asixmdioread asixreadcmd may read le...

Duplicate Advisory: vm2: NodeVM zlib Buffers expose pooled host memory across the VM boundary

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-489w-w794-jq94. This link is maintained to preserve external references. Original Description vm2 before 3.12.2 does not apply its Buffer backing-store ownership invariant byteOffset === 0 and buffer.byteLength...

GHSA-43RV-JRFH-9MRR Duplicate Advisory: vm2: NodeVM zlib Buffers expose pooled host memory across the VM boundary

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-489w-w794-jq94. This link is maintained to preserve external references. Original Description vm2 before 3.12.2 does not apply its Buffer backing-store ownership invariant byteOffset === 0 and buffer.byteLength...

CVE-2026-100723: Exposure of Sensitive Information to an Unauthorized Actor

vm2 before 3.12.2 does not apply its Buffer backing-store ownership invariant byteOffset === 0 and buffer.byteLength === length to Buffers returned from host builtin modules. When an application explicitly exposes Node's zlib module through NodeVM's builtin allowlist require: builtin: 'zlib' ,...

kernel: nvme-tcp: fix host memory disclosure on R2T for a read command

A flaw was found in the Linux kernel's NVMe Non-Volatile Memory Express over TCP nvme-tcp component. A malicious NVMe controller can exploit this vulnerability by sending a Ready to Transfer R2T command for a read request. The host system, failing to properly validate the request direction, will...

RUSTSEC-2026-0313 Outgoing HTTP body write allows guest-driven host memory exhaustion

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p For more information see the GitHub-hosted security advisory...

Information Exposure

Overview vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Affected versions of this package are vulnerable to Information Exposure via the Buffer pool. An attacker can access and manipulate host memory by leveraging sandboxed code to acquire ArrayBuffers from...

Duplicate Advisory: Sandboxed code can read and write host-realm memory via Node's shared Buffer pool

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-fcqc-726x-5wfc This link is maintained to preserve external references. Original Description vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by...

CVE-2026-92947

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive dat...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fixed the issue of freeing the HMB descriptor table. The HMB descriptor table is sized based on the maximum number of descriptors that can be used for a given device. However, nvmeallochostmem might break out of the loo...

Astra Linux – Vulnerability in Linux

The file arch/powerpc/kvm/book3srtas.c in the Linux kernel, as of version 5.13.5 on the PowerPC platform, allows KVM guest OS users to cause memory corruption in the host OS through rtasargs.nargs, also known as CID-f62f3c20647e...

Astra Linux – Vulnerability in containerd-app

Containerd is an open-source container runtime. Versions 1.7.28 and below, 2.0.0-beta.0 through 2.0.6, 2.1.0-beta.0 through 2.1.4, and 2.2.0-beta.0 through 2.2.0-rc.1 contain a bug in the CRI Attach implementation, where a user may exhaust memory on the host due to goroutine leaks. This issue has...

Astra Linux – Vulnerability in Linux

A flaw was discovered in the KVM’s AMD code, which handles SVM nested virtualization. The flaw occurs during the processing of the VMCB virtual machine control block provided by the L1 guest to spawn/handle a nested guest L2. Due to improper validation of the “virtext” field, this issue could all...