Ubuntu 14.04 LTS New Internal Nuclear Security Update to fix Spectre V2 Vulnerability

Ubuntu 14.04 LTS New Internal Nuclear Security Update to fix Spectre V2 Vulnerability

Canonical today announced the release of a new kernel-safe update for the Ubuntu 3.13 LTS (Trusty Tahr) operating system running Linux 14.04 kernel, to fix the second variant of the Spectre vulnerability on 32-bit and 64-bit installations.

On October 16, January 23, 2018, Canonical updated the kernel package of Ubuntu 14.04 LTS (Trusty Tahr) to linux-image 3.20.- 141.190, patching the 64-bit (amd64) Vulnerability Detected by Jann Horn) specter Variant 2 Security Vulnerability and hardware architecture.

Local attackers can exploit the Spectre vulnerability to exploit the branch prediction and speculative execution functions to leak sensitive information from the kernel memory on the modern microprocessor. Canonical now supports the 32-bit hardware architecture of the Ubuntu 14.04 LTS system.

"The USN-3542-1 mitigates the CVE-2017-5715 (Specter Variant 2) of the amd64 architecture in Ubuntu 14.04 LTS, which provides compiler-based retpoline kernel mitigations for the amd64 and i386 architectures, "read today's security announcement. "To update your system, follow the instructions below: https://wiki.ubuntu.com/security/upgrades ."

We urge users to update their installation immediately

If you still use the Ubuntu 14.04 LTS (Trusty Tahr) operating system on the desktop or server machine and it runs the Linux 3.13 kernel, you need to update the installation to the linux-image 3.small-143.192 kernel package. Now they can be used as common, General lpae and Low-latency images in the main software libraries.

Canonical recommends that you restart the installation of the new kernel version so that all necessary changes take effect. In addition, note that you must recompile and reinstall any third-party kernel modules that may be installed after the kernel package is updated.

In June February 22, 2018, Canonical was enabled for hardware by Xenial HWE) in the 64-bit and 32-bit architecture of the Ubuntu 14.04.5 LTS system, the compiler-based retpoline for Specter Variant 2 is released to alleviate similar Kernel updates, as well as Ubuntu 17.10, ubuntu 16.04 LTS and Ubuntu 12.04 ESM machines.

Related: Canonical releases Spectre patch for Ubuntu Linux and Meltdown patch https://www.bkjia.com/Linux/2018-01/150520.htm for PowerPC

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