varstored: TOCTOU issues with mapped guest memory

ISSUE DESCRIPTION varstored is a component of the Xapi toolstack handling UEFI Variables for a VM. It has a communication path with OVMF inside the VM involving mapping a buffer prepared by OVMF. Within varstored, there were insufficient compiler barriers, creating TOCTOU issues with data in the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: vsock/vmci: Properly clear the vmci transport packet when initializing it. In vmcitransportpacketinit, memset is used to clear the vmcitransportpacket before populating the fields, to avoid any uninitialized data remaining in the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use arrayindexnospec with indices that come from the guest. min and destid are guest-controlled indices. Using arrayindexnospec after the bounds checks helps to mitigate speculative execution side-channels...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: VMCI: fixed a race condition between vmcihostsetupnotify and vmcictxunsetnotify. During our testing, it was found that a warning can occur in trygrabfolio. The detailed error message is as follows: ----------- Cut here ----------...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquiring SRCU in KVMGETMPSTATE to protect guest memory accesses Acquiring a lock on kvm-srcu when userspace is obtaining the MP state can lead to a severe edge case where processing APIC events, such as during pending...

EUVD-2026-4660

vm2 is an open source vm/sandbox for Node.js. In vm2 prior to version 3.10.2, Promise.prototype.then Promise.prototype.catch callback sanitization can be bypassed. This allows attackers to escape the sandbox and run arbitrary code. In lib/setup-sandbox.js, the callback function of...

KubeVirt Guest Agent DoS via Excessive Network Interface Reports

A flaw was found in KubeVirt. A user within a virtual machine VM, if the guest agent is active, can exploit this by causing the agent to report an excessive number of network interfaces. This action can overwhelm the system's ability to store VM configuration updates, effectively blocking changes...

CVE-2025-14525

A flaw was found in kubevirt. A user within a virtual machine VM, if the guest agent is active, can exploit this by causing the agent to report an excessive number of network interfaces. This action can overwhelm the system's ability to store VM configuration updates, effectively blocking changes...

CVE-2025-14525 Kubevirt: kubevirt: vm administration denial of service via guest agent

A flaw was found in kubevirt. A user within a virtual machine VM, if the guest agent is active, can exploit this by causing the agent to report an excessive number of network interfaces. This action can overwhelm the system's ability to store VM configuration updates, effectively blocking changes...

EUVD-2025-206339

A flaw was found in kubevirt. A user within a virtual machine VM, if the guest agent is active, can exploit this by causing the agent to report an excessive number of network interfaces. This action can overwhelm the system's ability to store VM configuration updates, effectively blocking changes...

CVE-2025-14525 Kubevirt: kubevirt: vm administration denial of service via guest agent

A flaw was found in kubevirt. A user within a virtual machine VM, if the guest agent is active, can exploit this by causing the agent to report an excessive number of network interfaces. This action can overwhelm the system's ability to store VM configuration updates, effectively blocking changes...

CVE-2025-14525

Summary: CVE-2025-14525 describes a denial-of-service flaw in kubevirt where a VM user with an active guest agent can cause the agent to report an excessive number of network interfaces. This overloads the system’s ability to record VM configuration updates, effectively blocking changes to the Vi...

CVE-2025-14525

A flaw was found in kubevirt. A user within a virtual machine VM, if the guest agent is active, can exploit this by causing the agent to report an excessive number of network interfaces. This action can overwhelm the system's ability to store VM configuration updates, effectively blocking changes...

BIT-NODE-2025-55131

A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the vm module with the timeout option. Under specific timing conditions, buffers allocated with Buffer.alloc and other TypedArray instances like Uint8Array may contain leftover...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP6 kernel was updated to fix various security issues The following security issues were fixed: CVE-2025-38321: smb: Log an error when closeallcacheddirs fails bsc1246328. CVE-2025-38728: smb3: fix for slab out of bounds on mount to ksmbd bsc1249256. CVE-2025-39890:...

vm2 security vulnerabilities

vm2 is a high-level virtual machine/sandbox developed by Czech developer Patrik Simek. It runs untrusted code using Node’s built-in modules listed in the allowlist. Versions of vm2 prior to 3.10.2 have security vulnerabilities; these vulnerabilities stem from Promise callback cleanup mechanisms...

PT-2026-4821

Name of the Vulnerable Software and Affected Versions vm2 versions prior to 3.10.2 Description vm2 is a Node.js library used to create sandboxed environments for executing untrusted code. A flaw exists in versions prior to 3.10.2 where the sanitization of Promise.prototype.then and...

PT-2026-4806

Name of the Vulnerable Software and Affected Versions kubevirt affected versions not specified Description A flaw exists in kubevirt where a user inside a virtual machine VM, with an active guest agent, can trigger a denial of service. By reporting an excessive number of network interfaces, the...

CVE-2025-71155

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix gmaphelperzaponepage again A few checks were missing in gmaphelperzaponepage, which can lead to memory corruption in the guest under specific circumstances. Add the missing checks...

SUSE-SU-2026:0238-1 Security update for dpdk

This update for dpdk fixes the following issues: Update to version 24.11.4: - CVE-2025-23259: Fixed an attacker on a VM in the system can cause information disclosure and denial of service bsc1254161. Changelog: https://doc.dpdk.org/guides-24.11/relnotes/release2411.htmlid10...