Linux Kernel TCP Sysctl Concurrent Access Vulnerability

A vulnerability in the Linux kernel's TCP implementation allows for concurrent modification of the 'sysctl_tcp_recovery' parameter while it is being read. This data race can lead to inconsistent or unexpected behavior. The issue has been addressed by adding a 'READ_ONCE()' directive to the readers of this parameter, ensuring safe access.

Impact

Exploitation of this vulnerability could lead to data corruption or unpredictable behavior in TCP connections, potentially disrupting network communication or causing applications to misbehave.