Security News > 2019 > June > SACK TCP flaws can crash, slow down Linux-based systems

An engineering manager at Netflix has unearthed several TCP networking vulnerabilities in Linux and FreeBSD kernels that could lead to systems crashing or consuming too many resources and (consequently) slowing down. About the vulnerabilities The flaws were discovered by Jonathan Looney, who apart from working at Netflix is also a FreeBSD developer. They all affect the Selective Acknowledgments (SACK) TCP mechanism, which allows a receiving machine to acknowledge which data/packets it has received so that … More → The post SACK TCP flaws can crash, slow down Linux-based systems appeared first on Help Net Security.

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