The tcp_read_sock function in net/ipv4/tcp.c in the Linux kernel before 2.6.34 does not properly manage skb consumption, which allows local users to cause a denial of service (system crash) via a crafted splice system call for a TCP socket.
http://rhn.redhat.com/errata/RHSA-2013-1051.html
https://bugzilla.redhat.com/show_bug.cgi?id=968484
https://github.com/torvalds/linux/commit/baff42ab1494528907bf4d5870359e31711746ae