Critical security update for Ubuntu 22.04 LTS: USN-7889-5 patches multiple Linux kernel vulnerabilities (CVE-2025-21729, CVE-2025-38227, CVE-2025-38616, CVE-2025-38678) in media drivers, Netfilter & TLS. Step-by-step guide for system administrators to mitigate risk, update the linux-ibm kernel, and manage third-party modules. Essential reading for enterprise cybersecurity.



















