---
title: Blog posts tagged "sack panic"
description: Canonical makes open source secure, reliable and easy to use, providing
  support for Ubuntu and a portfolio of enterprise-grade technologies. Founded in
  2004, Canonical operates globally with team members in over 80 countries.
url: https://canonical.com/blog/tag/sack-panic?format=md
---

# Blog posts tagged "sack panic"

#### [Ubuntu updates for TCP SACK Panic vulnerabilities](https://canonical.com/blog/mitigations-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

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Cloud and server