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TTCSIRT-215.062819: TT-CSIRT Advisory – Ubuntu Security Updates

28th June 2019

Canonical has released a security update stating that it has discovered a vulnerability in its Ubuntu Linux OS where a sequence of specifically crafted selective acknowledgements (SACK) may trigger an integer overflow, leading to a denial of service or possible kernel failure.

Further information on this vulnerability and how it can be mitigated can be found on the Ubuntu Webste at