CVE-2025-36238

CVE-2025-36238 affects IBM PowerVM Hypervisor: FW1110.00–FW1110.03, FW1060.00–FW1060.51, and FW950.00–FW950.F0 may let a local administrator obtain sensitive information from a Virtual TPM via PowerVM service procedures. Affected products include PowerVM Hypervisor across Power 9–11 generations (...

CVE-2025-36238 Power System Exposure of Sensitive System Information

IBM PowerVM Hypervisor FW1110.00 through FW1110.03, FW1060.00 through FW1060.51, and FW950.00 through FW950.F0 could allow a local user with administration privileges to obtain sensitive information from a Virtual TPM through a series of PowerVM service procedures...

CVE-2025-36238

IBM PowerVM Hypervisor FW1110.00 through FW1110.03, FW1060.00 through FW1060.51, and FW950.00 through FW950.F0 could allow a local user with administration privileges to obtain sensitive information from a Virtual TPM through a series of PowerVM service procedures...

IBM PowerVM Hypervisor 安全漏洞

The IBM PowerVM Hypervisor is a software application developed by International Business Machines IBM. It provides a secure and scalable virtualization environment. These applications are built based on the advanced RAS capabilities and leading performance of the Power Systems platform. Security...

IBM PowerVM Hypervisor 安全漏洞

The IBM PowerVM Hypervisor is a Type 1 bare metal virtualization hypervisor Hypervisor developed by IBM for its Power Systems server platform. An information disclosure vulnerability exists in IBM PowerVM Hypervisor versions FW1110.00 through FW1110.03, FW1060.00 through FW1060.51, and FW950.00...

CVE-2026-23553

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

ALPINE-CVE-2026-23553

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

CVE-2026-23553

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

UBUNTU-CVE-2026-23553

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

EUVD-2026-4882

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

CVE-2026-23553

CVE-2026-23553 is an issue in the Xen hypervisor: during context switches, Xen may skip IBPB when a vCPU returns to the same physical CPU, potentially allowing stale BTB/GPU state to persist across tasks and undermine guest kernel isolation. The advisory chain shows the vulnerability is tied to i...

CVE-2026-23553

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

AZL-78047 CVE-2026-24800 affecting package cloud-hypervisor for versions less than 32.0-6

Out-of-bounds Write, Buffer Copy without Checking Size of Input 'Classic Buffer Overflow' vulnerability in tildearrow furnace extern/zlib modules. This vulnerability is associated with program files inflate.C...

Security Bulletin: This Power System update is being released to address CVE-2025-49087

Summary Mbed-TLS is used by partition firmware for Linux secure boot. This update is being released to mitigate any potential impacts to Linux partitions with secure boot enabled. Vulnerability Details CVEID:CVE-2025-49087 DESCRIPTION: In Mbed TLS 3.6.1 through 3.6.3 before 3.6.4, a timing...

Security Bulletin: This Power System update is being released to address CVE-2025-36238

Summary If an attacker is able to gain system administrator access a Virtual TPM can be compromised through the use of a series of PowerVM service procedures. Vulnerability Details CVEID:CVE-2025-36238 DESCRIPTION: IBM PowerVM Hypervisor could allow a local user with administration privileges to...

Security Bulletin: This Power System update is being released to address CVE-2025-36194

Summary The PowerVM hypervisor may expose a limited amount of data to a peer partition in specific shared processor configurations during certain operations. Vulnerability Details CVEID:CVE-2025-36194 DESCRIPTION: IBM PowerVM hypervisor may expose a limited amount of data to a peer partition in...

kernel: KVM: arm64: Tear down vGIC on failed vCPU creation

A use-after-free flaw was found in KVM for arm64 in the Linux Kernel, if the kvmarchvcpucreate fails to share the vCPU page with the hypervisor. This vulnerability could even lead to a kernel information leak problem...

Security Bulletin: This Power System update is being released to address CVE-2025-49133

Summary The PowerVM Virtual Trusted Platform Module vTPM feature is impacted by the referenced vulnerability. This issue was fixed in a previous security bulletin for CVE-2025-2884: https://www.ibm.com/support/pages/node/7238453 Vulnerability Details CVEID:CVE-2025-49133 DESCRIPTION: Libtpms is a...

Exploit for CVE-2025-29943

StackWarp: PoC for CVE-2025-29943 Prueba de concepto para la...

kernel: KVM: arm64: Tear down vGIC on failed vCPU creation

A use-after-free flaw was found in KVM for arm64 in the Linux Kernel, if the kvmarchvcpucreate fails to share the vCPU page with the hypervisor. This vulnerability could even lead to a kernel information leak problem...