The nr_recvmsg function in net/netrom/af_netrom.c in the Linux kernel before 3.12.4 updates a certain length value without ensuring that an associated data structure has been initialized, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f3d3342602f8bcbf37d7c46641cb9bca7618eb1c
secunia.com/advisories/55882
secunia.com/advisories/56036
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.4
www.openwall.com/lists/oss-security/2013/12/31/7
www.securityfocus.com/bid/64742
www.ubuntu.com/usn/USN-2109-1
www.ubuntu.com/usn/USN-2110-1
www.ubuntu.com/usn/USN-2113-1
www.ubuntu.com/usn/USN-2117-1
www.ubuntu.com/usn/USN-2128-1
www.ubuntu.com/usn/USN-2129-1
www.ubuntu.com/usn/USN-2135-1
www.ubuntu.com/usn/USN-2136-1
www.ubuntu.com/usn/USN-2138-1
www.ubuntu.com/usn/USN-2139-1
www.ubuntu.com/usn/USN-2141-1
bugzilla.redhat.com/show_bug.cgi?id=1039845
exchange.xforce.ibmcloud.com/vulnerabilities/90130
github.com/torvalds/linux/commit/f3d3342602f8bcbf37d7c46641cb9bca7618eb1c