Security researchers have discovered more than a decade-old vulnerability in several Unix-based operating systems — including Linux, OpenBSD, NetBSD, FreeBSD and Solaris — which can be exploited by attackers to escalate their privileges to root, potentially leading to a full system takeover. Dubbed Stack Clash, the vulnerability (CVE-2017-1000364) has been discovered in the way memory was being allocated on the stack for user space binaries.

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