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Amazon Linux AMI : microcode_ctl / kernel (ALAS-2019-1318)

Description

This security update is only applicable to EC2 Bare Metal instance types using Intel processors. Intel has released microcode updates for certain Intel CPUs. After installing the updated microcode_ctl package, the microcode will be automatically activated on next boot. Improper conditions check in the voltage modulation interface for some Intel Xeon Scalable Processors may allow a privileged user to potentially enable denial of service via local access.(CVE-2019-11139) TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access.(CVE-2019-11135)


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