From 89a48b22ec8c2358742b93336b8090b7185ff9ee Mon Sep 17 00:00:00 2001 From: nectar Date: Mon, 9 Sep 2002 16:14:03 +0000 Subject: Check for FD_SET overrun. --- usr.bin/rsh/rsh.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'usr.bin/rsh/rsh.c') diff --git a/usr.bin/rsh/rsh.c b/usr.bin/rsh/rsh.c index 0b52be4..a4a3a74 100644 --- a/usr.bin/rsh/rsh.c +++ b/usr.bin/rsh/rsh.c @@ -367,6 +367,8 @@ reread: errno = 0; bp = buf; rewrite: + if (rem >= FD_SETSIZE) + errx(1, "descriptor too big"); FD_ZERO(&rembits); FD_SET(rem, &rembits); nfds = rem + 1; @@ -404,6 +406,8 @@ done: tvtimeout.tv_usec = 0; (void)sigsetmask(omask); + if (rfd2 >= FD_SETSIZE || rem >= FD_SETSIZE) + errx(1, "descriptor too big"); FD_ZERO(&readfrom); FD_SET(rfd2, &readfrom); FD_SET(rem, &readfrom); -- cgit v1.1