Linux Kernel TCP Sysctl Max Reordering Data-Race Vulnerability

A data-race vulnerability has been identified in the Linux kernel's TCP implementation, specifically regarding the sysctl_tcp_max_reordering parameter. While this parameter is being read, it can be concurrently modified, leading to potential inconsistencies. To address this issue, the kernel has been updated to include a READ_ONCE() directive for its readers, ensuring a more stable and reliable operation.

Impact

The vulnerability could lead to inconsistent behavior in TCP packet reordering, potentially causing issues in network communication and performance.