Security Insights
Latest threat analysis, industry news, and security best practices from our expert team.
USN-8816-3: Ubuntu Linux Oracle Kernel Vulnerabilities — Patching and Detection Guide for Defenders
Overview Canonical has released USN-8816-3, a security update for the Oracle Cloud (linux-oracle) kernel flavor used on Ubuntu instances run...
Branch Target Reuse (BTR) Spectre v2 Attack Leaks Linux Root Password Hashes on Intel CPUs — Mitigation and Verification Guide
A New Spectre v2 Lineage Attack Puts Linux Root Credentials at Risk Researchers have demonstrated a new speculative-execution side channel d...
USN-8816-2: Ubuntu Linux Kernel Vulnerabilities — Detection, Patching, and Attack-Surface Reduction Guide
Canonical has issued USN-8816-2, a revised Ubuntu Security Notice correcting multiple vulnerabilities in the Linux kernel. The scope of this...
USN-8728-3: Linux Kernel CPU Flaws (CVE-2025-10263, CVE-2025-54518) — Detection and Patching Guide for Ubuntu/Oracle Kernels
What Happened Canonical published USN-8728-3, an update to the Oracle-flavored Linux kernel packages shipping in supported Ubuntu releases. ...
CVE-2025-10263: Arm TLB Invalidation Flaw Patched in Ubuntu IBM Kernels (USN-8818-2) — Defender's Guide
Introduction Canonical has released USN-8818-2, a kernel security update targeting the IBM-optimized Linux kernel builds (linux-ibm) on Ubun...
USN-8819-2: Linux Kernel Flaws in NFS, IPv6, and Netfilter (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221) — Detection and Patching Guide
Overview Canonical has published USN-8819-2, a Linux kernel security update addressing three vulnerabilities — CVE-2025-38724, CVE-2026-5313...
USN-8730-6: Ubuntu Linux Kernel (Intel IoTG) IPv6 and Netfilter Flaws — Patch and Hardening Guide for Defenders
USN-8730-6: Linux Kernel (Intel IoTG) Vulnerability — What Defenders Need to Know Canonical has issued USN-8730-6, a revised kernel security...
USN-8729-5: Ubuntu Linux Kernel (AWS FIPS) Vulnerabilities — Patching and Detection Guide for Cloud Workloads
Overview Canonical has published USN-8729-5, a security update for the Linux kernel used in AWS FIPS environments, addressing multiple vulne...
USN-8729-4: Ubuntu Linux Kernel (Low Latency) Vulnerabilities — Patching and Verification Guide
Introduction Canonical has published USN-8729-4, a security update for the Ubuntu low-latency Linux kernel, addressing a batch of vulnerabil...