Use-after-free vulnerability in the servePendingRequests function in WebCore in WebKit in Apple Safari 4.0 and 4.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted HTML document that references a zero-length .js file and the JavaScript reload function. NOTE: some of these details are obtained from third party information.
https://exchange.xforce.ibmcloud.com/vulnerabilities/51533
http://www.vupen.com/english/advisories/2011/0212
http://trac.webkit.org/changeset/44519
http://secunia.com/advisories/43068
http://secunia.com/advisories/33495
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html