Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
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 triggered by a guest running malicious, privileged code. 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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
#FreeBSD SA-26:72.bhyve bhyveに脆弱性複数発覚。xHCI(USB3)でホストはゲスト側TRBを使う為悪意ゲストが操作可能。HDAオーディオで長さ0のBDLからDMA領域外読書。フレームバッファ最大サイズ管理が重複、不一致可能性。 CVE-2026-101309, -101310, -101311 https://www.freebsd.org/security/advisories/FreeBSD-SA-26:72.bhyve.asc