Software suspend 2 2-2.2.1, when used with the Linux kernel 2.6.16, stores pre-boot authentication passwords in the BIOS Keyboard buffer and does not clear this buffer after use, which allows local users to obtain sensitive information by reading the physical memory locations associated with this buffer.

More... (http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2008-3901)