Ubuntu updates for TCP SACK Panic vulnerabilities

Canonical 14.04, 16.04, 18.04, Articles, Ciencia, Conocimientos Generales, esm, livepatch, sack panic, Security, security update, TCP Sack Panic, Trusty, Trusty Tahr julio 5, 2019

Issues have been identified in the way the Linux kernel’s TCP implementation processes Selective Acknowledgement (SACK) options and handles low Maximum Segment Size (MSS) values. These TCP SACK Panic vulnerabilities could expose servers to a denial of service attack, so it is crucial to have systems patched. Updated versions of the Linux kernel packages are […]

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Ubuntu updates to mitigate new Microarchitectural Data Sampling (MDS) vulnerabilities

Alex Murray 14.04, 16.04, 18.04, Articles, Ciencia, Conocimientos Generales, esm, Intel, mds, Security, security update, Trusty, Trusty Tahr mayo 14, 2019

Microarchitectural Data Sampling (MDS) describes a group of vulnerabilities (CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, and CVE-2019-11091) in various Intel microprocessors, which allow a malicious process to read various information from another process which is executing on the same CPU core. This occurs due to the use of various microarchitectural elements (buffers) within the CPU core. If one […]

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