CVE-2007-5501 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-5501): The tcp_sacktag_write_queue function in net/ipv4/tcp_input.c in Linux kernel 2.6.24-rc2 and earlier allows remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference.
latest update from 2007 please close