[Qemu-devel] [PATCH 1/2] linux-user: fd_trans_host_to_target_data() must process only received data

[Laurent Vivier]

if we process the whole buffer, the netlink helpers can try
to swap invalid data.

Signed-off-by: Laurent Vivier <address@hidden>
---
 linux-user/syscall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 0b937ca..3c30437 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -2987,7 +2987,7 @@ static abi_long do_sendrecvmsg_locked(int fd, struct 
target_msghdr *msgp,
             len = ret;
             if (fd_trans_host_to_target_data(fd)) {
                 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
-                                                       msg.msg_iov->iov_len);
+                                                       len);
             } else {
                 ret = host_to_target_cmsg(msgp, &msg);
             }
-- 
2.5.5