diff --git a/fs/exec.c b/fs/exec.c
index 6eea921a7e72..e87e3c020c61 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -984,7 +984,7 @@ int kernel_read_file_from_fd(int fd, void **buf, loff_t *size, loff_t max_size,
 	struct fd f = fdget(fd);
 	int ret = -EBADF;
 
-	if (!f.file)
+	if (!f.file || !(f.file->f_mode & FMODE_READ))
 		goto out;
 
 	ret = kernel_read_file(f.file, buf, size, max_size, id);