From 378d6c1f3697b8b939e6632e980562bfc8fb2781 Mon Sep 17 00:00:00 2001
From: Andrei Vagin <avagin@google.com>
Date: Thu, 12 Dec 2019 11:07:25 -0800
Subject: unix: allow to bind unix sockets only to AF_UNIX addresses

Reported-by: syzbot+2c0bcfd87fb4e8b7b009@syzkaller.appspotmail.com
PiperOrigin-RevId: 285228312
---
 test/syscalls/linux/socket_unix.cc | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'test/syscalls/linux/socket_unix.cc')

diff --git a/test/syscalls/linux/socket_unix.cc b/test/syscalls/linux/socket_unix.cc
index 8a28202a8..4cf1f76f1 100644
--- a/test/syscalls/linux/socket_unix.cc
+++ b/test/syscalls/linux/socket_unix.cc
@@ -65,6 +65,21 @@ TEST_P(UnixSocketPairTest, BindToBadName) {
       SyscallFailsWithErrno(ENOENT));
 }
 
+TEST_P(UnixSocketPairTest, BindToBadFamily) {
+  auto pair =
+      ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create());
+
+  constexpr char kBadName[] = "/some/path/that/does/not/exist";
+  sockaddr_un sockaddr;
+  sockaddr.sun_family = AF_INET;
+  memcpy(sockaddr.sun_path, kBadName, sizeof(kBadName));
+
+  EXPECT_THAT(
+      bind(pair->first_fd(), reinterpret_cast<struct sockaddr*>(&sockaddr),
+           sizeof(sockaddr)),
+      SyscallFailsWithErrno(EINVAL));
+}
+
 TEST_P(UnixSocketPairTest, RecvmmsgTimeoutAfterRecv) {
   auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
   char sent_data[10];
-- 
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