X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=include%2Flinux%2Ffdtable.h;h=41615f38bcff3ec5740fa7368bde90933ac746da;hb=bba3a826b151679ef85d09b818801f4973187f39;hp=1c65817673db17f62f668c3760e115d6728b6d21;hpb=ad0835a93008e5901415a0a27847d6a27649aa3a;p=mirror_ubuntu-bionic-kernel.git

diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
index 1c65817673db..41615f38bcff 100644
--- a/include/linux/fdtable.h
+++ b/include/linux/fdtable.h
@@ -10,6 +10,7 @@
 #include <linux/compiler.h>
 #include <linux/spinlock.h>
 #include <linux/rcupdate.h>
+#include <linux/nospec.h>
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/fs.h>
@@ -82,8 +83,10 @@ static inline struct file *__fcheck_files(struct files_struct *files, unsigned i
 {
 	struct fdtable *fdt = rcu_dereference_raw(files->fdt);
 
-	if (fd < fdt->max_fds)
+	if (fd < fdt->max_fds) {
+		fd = array_index_nospec(fd, fdt->max_fds);
 		return rcu_dereference_raw(fdt->fd[fd]);
+	}
 	return NULL;
 }