From: Alan T. DeKok <aland@freeradius.org>
Date: Fri, 6 Dec 2024 15:15:49 +0000 (-0500)
Subject: clamp values
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd9f459c5035fb8aefb33e0f5e4a6458615747bd;p=thirdparty%2Ffreeradius-server.git

clamp values
---

diff --git a/src/lib/bio/fd_open.c b/src/lib/bio/fd_open.c
index c9ec70f70cf..e6f88522c46 100644
--- a/src/lib/bio/fd_open.c
+++ b/src/lib/bio/fd_open.c
@@ -106,10 +106,16 @@ static int fr_bio_fd_common_datagram(int fd, UNUSED fr_socket_t const *sock, fr_
 	}
 #endif
 
+
 #ifdef SO_RCVBUF
 	if (cfg->recv_buff) {
 		int opt = cfg->recv_buff;
 
+		/*
+		 *	Clamp value to something reasonable.
+		 */
+		if (opt > (1 << 29)) opt = (1 << 29);
+
 		if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &opt, sizeof(opt)) < 0) {
 			fr_strerror_printf("Failed setting SO_RCVBUF: %s", fr_syserror(errno));
 			return -1;
@@ -121,6 +127,11 @@ static int fr_bio_fd_common_datagram(int fd, UNUSED fr_socket_t const *sock, fr_
 	if (cfg->send_buff) {
 		int opt = cfg->send_buff;
 
+		/*
+		 *	Clamp value to something reasonable.
+		 */
+		if (opt > (1 << 29)) opt = (1 << 29);
+
 		if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &opt, sizeof(opt)) < 0) {
 			fr_strerror_printf("Failed setting SO_SNDBUF: %s", fr_syserror(errno));
 			return -1;