Release Notes: This release fixes a couple of bugs, some of which could crash socat under some circumstances.
Release Notes: This release fixes a security issue: Under certain circumstances, an FD leak occurs and may be misused for denial-of-service attacks against socat running in server mode (CVE-2013-3571)
Release Notes: Fixes a possible heap buffer overflow in the readline address.
Release Notes: This release allows tun/tap interfaces without IP addresses and introduces the options openssl-compress and max-children. It fixes 18 bugs and has 11 changes for improved platform support, especially Mac OS X Lion, DragonFly, and Android.
Release Notes: A stack overflow vulnerability has been fixed that could be triggered when command line arguments were longer than 512 bytes.
Release Notes: This release fixes some bugs: building on RedHat systems, OpenSSL "nonblock" failure, Debian bug 531078 (SIGCHLD), 64-bit issues, and some minor bugs.