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It was discovered that a new class of side channel attacks impact most processors, including processors from Intel, AMD, and ARM. The attack allows malicious userspace processes to read kernel memory and malicious code in guests to read hypervisor memory. To address the issue, updates to the Ubuntu kernel and processor microcode will be needed. These updates will be announced in future Ubuntu Secu ...

firefox: Mozilla Open Source web browser Firefox could be made to expose sensitive information.

webkit2gtk: Web content engine library for GTK+ WebKitGTK+ could be made to expose sensitive information.

intel-microcode: Processor microcode for Intel CPUs The system could be made to expose sensitive information.

linux: Linux kernel Several security issues were addressed in the Linux kernel.

intel-microcode: Processor microcode for Intel CPUs Details: USN-3531-1 updated Intel microcode to the 20180108 release. Regressions were discovered in the microcode updates which could cause system instability on certain hardware platforms. At the request of Intel, we have reverted to the previous packaged microcode version, the 20170707 release. Original advisory USN-3531-1 introduced regression ...

linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services systems - linux-euclid: Linux kernel for Intel Euclid systems Details: Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, inclu ...

linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform systems - linux-hwe: Linux hardware enablement kernel - linux-oem: Linux kernel for OEM processors Details: USN-3541-1 addressed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17 ...

linux-aws: Linux kernel for Amazon Web Services systems - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty Details: USN-3540-1 addressed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Jann Horn discovered that microprocessors util ...

linux: Linux kernel Details: Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. This update provides mitigations for the i386 , amd64, ppc64el, and s390x architectures. USN ...


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