Kernel

Everything BlueTeam Insider has reported about Kernel: 2 stories, newest first. Part of our Vulnerabilities coverage.

Vulnerabilities

Linux KVM Guest-Triggered SMM MMIO Cache Bug Lets VMs Modify Backing Pages Undetected

BlueTeam InsiderOct 19, 2026

A guest-triggerable bug in Linux KVM allows bypassing write tracking via stale SMM MMIO cache entries, potentially letting a virtual machine modify backing pages without detection.

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Vulnerabilities

FreeBSD Use-After-Free Bug in File Descriptor Handling Grants Local Root Access

BlueTeam InsiderOct 17, 2026

A high-severity flaw in FreeBSD allows local attackers to gain root access via a use-after-free error in file descriptor handling.

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