fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.
- http://www.kernel.org/pub/linux/kernel/v3.x/
- http://www.ubuntu.com/usn/USN-1594-1
No PoCs found on GitHub currently.