CVSROOT: /cvs Module name: src Changes by: t...@cvs.openbsd.org 2023/08/14 02:07:27
Modified files:
usr.bin/nc : netcat.c
Log message:
netcat: avoid issuing syscalls on fd -1
In case a socket error condition occurs, readwrite() invalidates the
corresponding fd. Later on, readwrite() may still issue a syscall on
it. Avoid that by adding a couple of checks for fd == -1.
Reported and fix suggested by Leah Neukirchen.
Fixes https://github.com/libressl/openbsd/issues/143
"looks right" deraadt
