diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c
index 6a1402c0945..8926e760fc3 100644
--- a/sys/compat/linux/linux_file.c
+++ b/sys/compat/linux/linux_file.c
@@ -1042,6 +1042,9 @@ linux_readlink(struct thread *td, struct linux_readlink_args *args)
 	char *name;
 	int error;
 
+	if (args->count <= 0)
+		return (EINVAL);
+
 	if (!LUSECONVPATH(td)) {
 		return (kern_readlinkat(td, AT_FDCWD, args->name, UIO_USERSPACE,
 		    args->buf, UIO_USERSPACE, args->count));
@@ -1060,6 +1063,9 @@ linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args)
 	char *name;
 	int error, dfd;
 
+	if (args->bufsiz <= 0)
+		return (EINVAL);
+
 	dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
 	if (!LUSECONVPATH(td)) {
 		return (kern_readlinkat(td, dfd, args->path, UIO_USERSPACE,