CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's IP Virtual Server (IPVS) implementation, where improper handling of IPv4 options during ICMP error processing can lead to a stack out-of-bounds write. This flaw could potentially allow an attacker to exploit the system by manipulating ICMP packets, leading to memory corruption and possible execution of arbitrary code. Organizations using Linux systems, particularly those relying on IPVS for load balancing, should prioritize patching this vulnerability to mitigate potential security risks.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: ipvs: clear IPv4 options after rebasing tunnel ICMP errors ip_vs_in_icmp() rebases an skb from the outer ICMP packet to the quoted original request before passing it to icmp_send(). However, IPCB(skb)->opt still describes the outer IPv4 header. A timestamp option in the outer header can therefore leave an offset that points into the quoted transport header after the rebase. __ip_options_echo() treats a byte at that stale location as the option length and copies it into the fixed-size option storage on the __icmp_send() stack, causing a stack out-of-bounds write. Clear the stale option metadata after resetting the network header. Keep the remaining control block fields, including the ingress interface used by the ICMP response path.