CVE-2026-101311

The bhyve hypervisor contains multiple vulnerabilities in its device models, specifically affecting the framebuffer device model. The issue stems from duplicated and desynchronized maximum resolution constants between the framebuffer and RFB modules. Additionally, the framebuffer BAR allows write...

CVE-2026-101311 Multiple vulnerabilities in bhyve device models

The framebuffer device model's maximum resolution constants were duplicated between the framebuffer and RFB modules and had gotten out of sync. Additionally, writes to the framebuffer BAR could set arbitrary width and height values without validation, and the framebuffer BAR I/O and RFB rendering...

CVE-2026-101311 Multiple vulnerabilities in bhyve device models

The framebuffer device model's maximum resolution constants were duplicated between the framebuffer and RFB modules and had gotten out of sync. Additionally, writes to the framebuffer BAR could set arbitrary width and height values without validation, and the framebuffer BAR I/O and RFB rendering...

CVE-2026-101311

The framebuffer device model's maximum resolution constants were duplicated between the framebuffer and RFB modules and had gotten out of sync. Additionally, writes to the framebuffer BAR could set arbitrary width and height values without validation, and the framebuffer BAR I/O and RFB rendering...

CVE-2026-101310 Multiple vulnerabilities in bhyve device models

The HDA audio device model did not check for zero-length Buffer Descriptor List BDL entries when starting a stream. A zero-length entry caused an out-of-bounds read or write during DMA transfer processing. BDL fields were also subject to modification by the guest after validation. A malicious gue...

EUVD-2026-101931

The HDA audio device model did not check for zero-length Buffer Descriptor List BDL entries when starting a stream. A zero-length entry caused an out-of-bounds read or write during DMA transfer processing. BDL fields were also subject to modification by the guest after validation. A malicious gue...

CVE-2026-101309 Multiple vulnerabilities in bhyve device models

The xHCI USB 3 device model did not validate or save the event ring size provided by the guest. The size was re-read from guest memory on each use, and Transfer Request Block TRB fields were loaded without protection against concurrent modification by the guest. This race condition could be...

CVE-2026-101309

The xHCI USB 3 device model did not validate or save the event ring size provided by the guest. The size was re-read from guest memory on each use, and Transfer Request Block TRB fields were loaded without protection against concurrent modification by the guest. This race condition could be...

CVE-2026-101309 Multiple vulnerabilities in bhyve device models

The xHCI USB 3 device model did not validate or save the event ring size provided by the guest. The size was re-read from guest memory on each use, and Transfer Request Block TRB fields were loaded without protection against concurrent modification by the guest. This race condition could be...

PT-2026-114820

Name of the Vulnerable Software and Affected Versions bhyve affected versions not specified Description The xHCI USB 3 device model fails to validate or save the event ring size provided by the guest. Because the size is re-read from guest memory during each use, Transfer Request Block TRB fields...

CVE-2026-101309: Concurrent Execution using Shared Resource with Improper Synchronization

The xHCI USB 3 device model did not validate or save the event ring size provided by the guest. The size was re-read from guest memory on each use, and Transfer Request Block TRB fields were loaded without protection against concurrent modification by the guest. This race condition could be...

CVE-2026-101311: Concurrent Execution using Shared Resource with Improper Synchronization

The framebuffer device model's maximum resolution constants were duplicated between the framebuffer and RFB modules and had gotten out of sync. Additionally, writes to the framebuffer BAR could set arbitrary width and height values without validation, and the framebuffer BAR I/O and RFB rendering...

FreeBSD Security Advisory - FreeBSD-SA-26:72.bhyve

FreeBSD Security Advisory - Multiple vulnerabilities in bhyve device models. A malicious guest can crash the bhyve process or potentially execute arbitrary code in the host userspace context running the virtual machine, subject to bhyve's Capsicum sandbox...

kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. A local attacker with privileges on the host system could exploit a vulnerability in how KVM handles shadow page table entries SPTEs during memory-mapped I/O MMIO operations. By manipulating guest page table entrie...

kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. A local attacker with privileges on the host system could exploit a vulnerability in how KVM handles shadow page table entries SPTEs during memory-mapped I/O MMIO operations. By manipulating guest page table entrie...

CVE-2026-23401

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. A local attacker with privileges on the host system could exploit a vulnerability in how KVM handles shadow page table entries SPTEs during memory-mapped I/O MMIO operations. By manipulating guest page table entrie...

PT-2026-29484

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.0.0-rc2-eafebd2d2ab0-sink-vm 319 Description A flaw was discovered in the Linux kernel's KVM component related to the handling of shadow-present SPTEs Stale Page Table Entries during the installation of emulate...

UBUNTU-CVE-2025-37936

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel: KVM: Mask PEBSENABLE loaded for guest with vCPU's value. When generating the MSRIA32PEBSENABLE value that will be loaded on VM-Entry to a KVM guest, mask the value with the vCPU's desired PEBSENABLE value...