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Ubuntu 19.10 (Eoan Ermine) Gets First Linux Kernel Security Patch, Update Now

Released last week on October 17th, Ubuntu 19.10 (Eoan Ermine) brought numerous new features and improvements, including experimental ZFS on root support in the installer, LZ4 initramfs compression for all architectures, up-to-date toolchain, and embedded Nvidia graphics drivers. It also ships with the latest Linux 5.3 kernel series. However, it would appear that Linux kernel 5.3 before before version 5.3.4 was plagued by a security vulnerability (CVE-2019-18198) found in the IPv6 routing implementation, which could allow a local attacker to crash the system or execute arbitrary code. The issue can be mitigated by disabling unprivileged user namespaces via the following command.