TicketNo: DTS2020081206296

Description: validate null pointer for recvmsg
Team: OTHERS
Feature or Bugfix: Feature
Binary Source: NA
PrivateCode(Yes/No):No

Change-Id: I185b8293eabb2ec0ba5f27a3fb90445c75c6f7c5
Reviewed-on: http://mgit-tm.rnd.huawei.com/10285435Tested-by: Npublic jenkins <public_jenkins@notesmail.huawei.com>
Reviewed-by: Njianghan 00316535 <jianghan2@huawei.com>
Reviewed-by: Nshenwei 00579521 <denny.shenwei@huawei.com>

src/network/recvmsg.c

@@ -3,6 +3,7 @@
 #include <time.h>
 #include <sys/time.h>
 #include <string.h>
+#include <errno.h>
 #include "syscall.h"
 
 hidden void __convert_scm_timestamps(struct msghdr *, socklen_t);
@@ -50,6 +51,10 @@ void __convert_scm_timestamps(struct msghdr *msg, socklen_t csize)
 ssize_t recvmsg(int fd, struct msghdr *msg, int flags)
 {
 	ssize_t r;
+	if (!msg) {
+		errno = EFAULT;
+		return -1;
+	}
 	socklen_t orig_controllen = msg->msg_controllen;
 #if LONG_MAX > INT_MAX
 	struct msghdr h, *orig = msg;