Linux Kernel TCP MTU Probing Data Race Vulnerability

A data race vulnerability has been identified in the Linux kernel's TCP implementation, specifically regarding the 'sysctl_tcp_mtu_probing' setting. This vulnerability allows the MTU probing value to be changed concurrently while it is being read, potentially leading to inconsistent behavior. The issue has been addressed by adding a 'READ_ONCE()' directive to the readers of this sysctl parameter.

Impact

Exploitation of this vulnerability could lead to data races, causing inconsistent reads of the 'sysctl_tcp_mtu_probing' value, which could disrupt TCP MTU probing behavior.