Denial of Service Vulnerability in Linux Kernel 2.6.18 on Red Hat Enterprise Linux

CVE-2009-4272

What is CVE-2009-4272?

A vulnerability in the Linux kernel 2.6.18 on Red Hat Enterprise Linux 5 enables remote attackers to trigger a denial of service through specially crafted packets. This issue arises from a flaw in the routing system that causes collisions in the IPv4 routing hash table, leading to a node deadlock scenario. This vulnerability is noteworthy as it stems from the improper handling of emergency routing situations, where an excessive hash chain length can prompt system instability. Users are encouraged to update their systems to mitigate the risk associated with this vulnerability.

References