Linux

Everything BlueTeam Insider has reported about Linux: 3 stories, newest first. Part of our Vulnerabilities coverage.

Vulnerabilities

Linux KSMBD Exposed to Two Unpatched Remote Code Execution Flaws

BlueTeam InsiderOct 22, 2026

Two high-severity remote code execution bugs in the Linux KSMBD kernel module have been disclosed publicly, leaving servers without a confirmed fix in the mainline kernel.

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.

Cyber Attacks

Bash .bashrc Manipulation Steals Sudo Passwords From Government Targets In Unit 42 Tracked Campaign

BlueTeam InsiderOct 16, 2026

Attackers modified Bash startup files to intercept sudo commands and steal passwords from government and infrastructure targets, according to Unit 42 research.