Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy.c in libvirt_proxy 0.5.1 might allow local users to gain privileges by sending a portion of the header of a virProxyPacket packet, and then sending the remainder of the packet with crafted values in the header, related to use of uninitialized memory in a validation check.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10127
https://bugzilla.redhat.com/show_bug.cgi?id=484947
http://www.securityfocus.com/bid/33724
http://www.redhat.com/support/errata/RHSA-2009-0382.html
http://secunia.com/advisories/34397
http://openwall.com/lists/oss-security/2009/02/10/8
http://git.et.redhat.com/?p=libvirt.git%3Ba=commitdiff%3Bh=2bb0657e28