The do_video_set_spu_palette function in fs/compat_ioctl.c in the Linux kernel before 3.6.5 on unspecified architectures lacks a certain error check, which might allow local users to obtain sensitive information from kernel stack memory via a crafted VIDEO_SET_SPU_PALETTE ioctl call on a /dev/dvb device.
https://github.com/torvalds/linux/commit/12176503366885edd542389eed3aaf94be163fdb
https://bugzilla.redhat.com/show_bug.cgi?id=949567
http://www.ubuntu.com/usn/USN-1829-1
http://www.openwall.com/lists/oss-security/2013/04/09/6
http://www.openwall.com/lists/oss-security/2013/04/06/2
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.6.5
http://rhn.redhat.com/errata/RHSA-2013-1645.html
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html