LOW
The hso_get_count function in drivers/net/usb/hso.c in the Linux kernel before 2.6.36-rc5 does not properly initialize a certain structure member, which allows local users to obtain potentially sensitive information from kernel stack memory via a TIOCGICOUNT ioctl call.
http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
http://lkml.org/lkml/2010/9/11/167
http://secunia.com/advisories/41440
http://secunia.com/advisories/42758
http://secunia.com/advisories/42890
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.36-rc5
http://www.openwall.com/lists/oss-security/2010/09/14/2
http://www.openwall.com/lists/oss-security/2010/09/14/7
http://www.redhat.com/support/errata/RHSA-2011-0007.html
http://www.securityfocus.com/bid/43226
http://www.ubuntu.com/usn/USN-1041-1
http://www.vupen.com/english/advisories/2011/0070