Linux SCTP CVE-2026-64564: Kernel Security Update Checklist
Plan and verify the Linux kernel update for CVE-2026-64564, using your distribution security channel and a controlled restart for affected server and container-host fleets.

Plan and verify the Linux kernel update for CVE-2026-64564, using your distribution security channel and a controlled restart for affected server and container-host fleets.
Patch Zimbra 10.1.19 for the Classic Web Client security fix, then verify backups, webmail, mail flow, proxy cache, and mailbox activity.
Ubuntu USN-8516-1 and USN-8517-1 patch Apache HTTP Server and ClamAV vulnerabilities. Update hosting, mail, and scanning servers.
GhostLock CVE-2026-43499 is a high-severity Linux kernel privilege-escalation issue. Patch vendor kernels, reboot, and verify hosting/container hosts.
Linux Bad Epoll CVE-2026-46242 is a kernel local privilege escalation issue. Patch, reboot, and verify the running kernel on hosting servers.
libssh2 CVE-2026-55200 affects client software that connects over SSH. Inventory packages, bundled copies, containers, and backup tools.
CVE-2026-53359 is a Linux KVM x86 shadow MMU issue publicized as Januscape. Hosting teams should patch affected KVM hosts.
Ubuntu marked five recent Linux kernel CVEs as High priority on July 5, 2026. Hosting teams should track affected releases and prepare kernel updates.
Ubuntu’s July 6 server security rollup now includes OpenSSH, PHP, GnuTLS, Gzip, socat, tar, Python, Request Tracker, SOGo, and Parsl updates.
Canonical published USN-8492-3 for Ubuntu linux-raspi-realtime packages. Patch Ubuntu 24.04 LTS Raspberry Pi Real-time systems, reboot, and verify edge workloads.