bhyve

bhyve Exploit code for CVE-2022-23087...

vulnerabilities in the FreeBSD bhyve hypervisor

The FreeBSD community has addressed several vulnerabilities in the bhyve Hypervisor. These vulnerabilities involve race conditions, incorrect validation, and synchronization issues in various device models within the bhyve Hypervisor. A malicious guest virtual machine can exploit these errors to...

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-2026-101310

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-2026-101311

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-2026-101311

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...

EUVD-2026-101930

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

The bhyve hypervisor contains a vulnerability in its HDA audio device model because it fails to validate zero-length Buffer Descriptor List (BDL) entries when starting a stream. This oversight, combined with the fact that BDL fields can be modified by a guest after validation, allows for an out-o...

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-2026-101310 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...

CVE-2026-101310

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

The bhyve hypervisor contains a race condition in its xHCI (USB 3) device model. The model fails to validate or save the event ring size provided by the guest, re-reading it from guest memory on each use. Furthermore, Transfer Request Block (TRB) fields are loaded without protection against concu...

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...

EUVD-2026-101932

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...

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...