nbd-server.c in Network Block Device (nbd-server) 2.9.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by causing a negotiation failure, as demonstrated by specifying a name for a non-existent export.Referenceshttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627042.http://security.gentoo.org/glsa/glsa-201206-35.xmlhttp://nbd.git.sourceforge.net/git/gitweb.cgi?p=nbd/nbd%3Ba=commitdiff%3Bh=ebbbe0b3ce5393fa42a259f5e03d549508586aaahttp://www.openwall.com/lists/oss-security/2011/05/17/1https://exchange.xforce.ibmcloud.com/vulnerabilities/67502http://www.securityfocus.com/bid/47884
