Linux Kernel TCP Data-Race Vulnerability in sysctl_tcp_slow_start_after_idle

A data-race vulnerability has been identified in the Linux kernel's TCP implementation, specifically concerning the sysctl_tcp_slow_start_after_idle parameter. This vulnerability arises because the parameter can be modified concurrently while it is being read, leading to potential inconsistencies. The issue has been addressed by adding a READ_ONCE() directive to the readers of this parameter.

Impact

Exploitation of this vulnerability could lead to inconsistent behavior in TCP connections, potentially causing performance issues or disrupting data transmission.