Merge tag 'wireless-drivers-for-davem-2017-02-06' of git://git.kernel.org/pub/scm...

[mirror_ubuntu-zesty-kernel.git] / kernel / cred.c

diff --git a/kernel/cred.c b/kernel/cred.c
index 0c0cd8a62285279a521b3f724189fe997da84ddb..5f264fb5737dcd01329fdeff02a4143584ba9c38 100644 (file)
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -689,6 +689,8 @@ EXPORT_SYMBOL(set_security_override_from_ctx);
  */
 int set_create_files_as(struct cred *new, struct inode *inode)
 {
+       if (!uid_valid(inode->i_uid) || !gid_valid(inode->i_gid))
+               return -EINVAL;
        new->fsuid = inode->i_uid;
        new->fsgid = inode->i_gid;
        return security_kernel_create_files_as(new, inode);