The console selection feature in the Linux kernel 2.6.28 before 2.6.28.4, 2.6.25, and possibly earlier versions, when the UTF-8 console is used, allows physically proximate attackers to cause a denial of service (memory corruption) by selecting a small number of 3-byte UTF-8 characters, which triggers an “off-by-two memory error.” NOTE: it is not clear whether this issue crosses privilege boundaries.
lists.openwall.net/linux-kernel/2009/01/30/333
lists.openwall.net/linux-kernel/2009/02/02/364
secunia.com/advisories/34917
secunia.com/advisories/34981
secunia.com/advisories/35121
www.debian.org/security/2009/dsa-1787
www.debian.org/security/2009/dsa-1800
www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.4
www.openwall.com/lists/oss-security/2009/02/12/10
www.openwall.com/lists/oss-security/2009/02/12/11
www.openwall.com/lists/oss-security/2009/02/12/9
www.redhat.com/support/errata/RHSA-2009-0451.html
www.securityfocus.com/bid/33672
www.ubuntu.com/usn/usn-751-1