The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB servers and man-in-the-middle attackers to cause a denial of service (infinite loop and system hang) via a (1) SMBv1 or (2) SMBv2 response packet that contains (a) an incorrect length value in a NetBIOS header or (b) an additional length field at the end of this response packet, aka "SMB Client Incomplete Response Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7186
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-020
http://www.vupen.com/english/advisories/2009/3216
http://www.us-cert.gov/cas/techalerts/TA10-103A.html
http://www.securitytracker.com/id?1023179
http://www.microsoft.com/technet/security/advisory/977544.mspx
http://secunia.com/advisories/37347
http://news.cnet.com/8301-27080_3-10395891-245.html
http://blogs.technet.com/msrc/archive/2009/11/13/microsoft-security-advisory-977544-released.aspx