mm/filemap.c in the Linux kernel before 2.6.25 allows local users to cause a denial of service (infinite loop) via a writev system call that triggers an iovec of zero length, followed by a page fault for an iovec of nonzero length.
https://github.com/torvalds/linux/commit/124d3b7041f9a0ca7c43a6293e1cae4576c32fd5
https://bugzilla.redhat.com/show_bug.cgi?id=1302009
http://www.openwall.com/lists/oss-security/2016/01/24/6
http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.25