Nasty Linux systemd security bug revealed
Summary
Successful exploitation of this newest vulnerability enables any unprivileged user to cause a denial of service via a kernel panic. It works by enabling attackers to misuse the alloca() function in a way that would result in memory corruption. This, in turn, allows a hacker to crash systemd and hence the entire operating system. Practically speaking, this can be done by a local attacker mounting a filesystem on a very long path. The good news is that Red Hat Product Security and systemds developers have immediately patched the hole.
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