The isofs_export_encode_fh function in fs/isofs/export.c in the Linux kernel before 3.6 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory via a crafted application.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fe685aabf7c8c9f138e5ea900954d295bf229175
lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html
www.mandriva.com/security/advisories?name=MDVSA-2013:176
www.openwall.com/lists/oss-security/2013/03/05/13
www.ubuntu.com/usn/USN-1809-1
www.ubuntu.com/usn/USN-1811-1
www.ubuntu.com/usn/USN-1812-1
www.ubuntu.com/usn/USN-1813-1
www.ubuntu.com/usn/USN-1814-1
www.ubuntu.com/usn/USN-1829-1
github.com/torvalds/linux/commit/fe685aabf7c8c9f138e5ea900954d295bf229175
www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2