Ubuntu updates for TCP SACK Panic vulnerabilities

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

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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Ubuntu 14.04 LTS has transitioned to ESM support

Extended Security Maintenance (ESM) is now available for Ubuntu 14.04 LTS to provide ongoing security patches for high and critical CVEs for UA Infrastructure customers.

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Ubuntu updates for L1 Terminal Fault vulnerabilities

For up-to-date patch, package, and USN links, please click here.  Today Intel announced a new side channel vulnerability known as L1 Terminal Fault. Raoul Strackx, Jo Van Bulck, Marina Minkin, Ofir Weisse, Daniel Genkin, Baris Kasikci, Frank Piessens, Mark Silberstein, Thomas F. Wenisch, Yuval Yarom, and researchers from Intel discovered that memory present in the L1 […]

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