[linux] CVE-2014-2568 net: potential information leak when ubuf backed skbs are skb_zerocopy()ied Description " An information leak flaw was found in the way skb_zerocopy() copied skbs that are backed by userspace buffers (for example vhost-net and recent xen netback). Once the source skb is consumed, ubuf destructor is called and potentially releases the corresponding userspace buffers, which can then for example be repurposed, while the destination skb is still pointing to the them. " MITRE assignment http://seclists.org/oss-sec/2014/q1/630 Upstream Patch https://lkml.org/lkml/2014/3/20/421 Bug Report https://bugs.archlinux.org/task/39566 Patch attached to bug report