The mmc_ioctl_cdrom_read_data function in drivers/cdrom/cdrom.c in the Linux kernel through 3.10 allows local users to obtain sensitive information from kernel memory via a read operation on a malfunctioning CD-ROM drive.
https://bugzilla.redhat.com/show_bug.cgi?id=973100
http://www.ubuntu.com/usn/USN-1942-1
http://www.ubuntu.com/usn/USN-1941-1
http://www.ubuntu.com/usn/USN-1913-1
http://www.ubuntu.com/usn/USN-1912-1
http://www.openwall.com/lists/oss-security/2013/06/10/9
http://www.debian.org/security/2013/dsa-2766
http://rhn.redhat.com/errata/RHSA-2013-1645.html
http://rhn.redhat.com/errata/RHSA-2013-1166.html
http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html
http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00003.html