The ntty_ioctl_tiocgicount function in drivers/char/nozomi.c in the Linux kernel 2.6.36.1...

Vulnerability Description

The ntty_ioctl_tiocgicount function in drivers/char/nozomi.c in the Linux kernel 2.6.36.1 and earlier 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.

References

• http://www.openwall.com/lists/oss-security/2010/09/25/2
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d281da7ff6f70efca0553c288bb883e8605b3862
• http://www.openwall.com/lists/oss-security/2010/10/06/6
• http://www.securityfocus.com/bid/45059
• http://www.redhat.com/support/errata/RHSA-2011-0007.html
• http://lkml.indiana.edu/hypermail//linux/kernel/1009.1/03387.html
• http://www.redhat.com/support/errata/RHSA-2010-0958.html
• http://securityreason.com/securityalert/8129
• http://www.openwall.com/lists/oss-security/2010/10/07/1
• http://secunia.com/advisories/42890
• http://www.openwall.com/lists/oss-security/2010/10/25/3
• https://bugzilla.redhat.com/show_bug.cgi?id=648663