A vulnerability has been found and corrected in socat:

Stack-based buffer overflow in the nestlex function in nestlex.c
in Socat 1.5.0.0 through 1.7.1.2 and 2.0.0-b1 through 2.0.0-b3,
when bidirectional data relay is enabled, allows context-dependent
attackers to execute arbitrary code via long command-line arguments
(CVE-2010-2799).

The updated packages have been patched to correct this issue.