Patch "cred: Reject inodes with invalid ids in set_create_file_as()" has been added to the 4.7-stable tree

This is a note to let you know that I've just added the patch titled

cred: Reject inodes with invalid ids in set_create_file_as()

to the 4.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
cred-reject-inodes-with-invalid-ids-in-set_create_file_as.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Seth Forshee <[email protected]>
Date: Tue, 26 Apr 2016 14:36:24 -0500
Subject: cred: Reject inodes with invalid ids in set_create_file_as()

From: Seth Forshee <[email protected]>

commit 5f65e5ca286126a60f62c8421b77c2018a482b8a upstream.

Using INVALID_[UG]ID for the LSM file creation context doesn't make sense, so return an error if the inode passed to set_create_file_as() has an invalid id.

---
 kernel/cred.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -689,6 +689,8 @@ EXPORT_SYMBOL(set_security_override_from
  */
 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);

Patches currently in stable-queue which might be from [email protected] are

queue-4.7/cred-reject-inodes-with-invalid-ids-in-set_create_file_as.patch queue-4.7/fs-check-for-invalid-i_uid-in-may_follow_link.patch