Off-by-one error in the get_prng_bytes function in crypto/ansi_cprng.c in the Linux kernel through 3.11.4 makes it easier for context-dependent attackers to defeat cryptographic protection mechanisms via multiple requests for small amounts of data, leading to improper management of the state of the consumed data.
https://bugzilla.redhat.com/show_bug.cgi?id=1007690
http://www.ubuntu.com/usn/USN-2158-1
http://www.ubuntu.com/usn/USN-2110-1
http://www.ubuntu.com/usn/USN-2109-1
http://www.ubuntu.com/usn/USN-2076-1
http://www.ubuntu.com/usn/USN-2075-1
http://www.ubuntu.com/usn/USN-2074-1
http://www.ubuntu.com/usn/USN-2072-1
http://www.ubuntu.com/usn/USN-2071-1
http://www.ubuntu.com/usn/USN-2070-1
http://www.ubuntu.com/usn/USN-2068-1
http://www.ubuntu.com/usn/USN-2065-1
http://www.ubuntu.com/usn/USN-2064-1
http://www.securityfocus.com/bid/62740
http://rhn.redhat.com/errata/RHSA-2013-1645.html
http://rhn.redhat.com/errata/RHSA-2013-1490.html