Ubuntu updates for TCP SACK Panic vulnerabilities

14.04 , 16.04 , 18.04 , ESM , Extended Security Maintenance , livepatch , sack panic , Security , TCP Sack Panic , Trusty Tahr 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…

Security Advisory – TCP SACK PANIC – Kernel vulnerabilities – CVE-2019-11477, CVE-2019-11478 & CVE-2019-11479

Redhat Ubuntu reference: https://access.redhat.com/security/vulnerabilities/tcpsack https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-11477.html https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md Primarily Impacted Products Red Hat Enterprise Linux 8Red Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 5Red Hat Atomic HostRed Hat Enterprise MRG 2Red Hat OpenShift Container Platform 4 (RHEL CoreOS)Red Hat OpenShift OnlineRed Hat OpenShift Dedicated (and dependent services)OpenShift on…
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