Patch "selinux: set next pointer before attaching to list" has been added to the 6.4-stable tree

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

    selinux: set next pointer before attaching to list

to the 6.4-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:
     selinux-set-next-pointer-before-attaching-to-list.patch
and it can be found in the queue-6.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 70d91dc9b2ac91327d0eefd86163abc3548effa6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@xxxxxxxxxxxxxx>
Date: Fri, 18 Aug 2023 17:33:58 +0200
Subject: selinux: set next pointer before attaching to list
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Christian Göttsche <cgzones@xxxxxxxxxxxxxx>

commit 70d91dc9b2ac91327d0eefd86163abc3548effa6 upstream.

Set the next pointer in filename_trans_read_helper() before attaching
the new node under construction to the list, otherwise garbage would be
dereferenced on subsequent failure during cleanup in the out goto label.

Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: 430059024389 ("selinux: implement new format of filename transitions")
Signed-off-by: Christian Göttsche <cgzones@xxxxxxxxxxxxxx>
Signed-off-by: Paul Moore <paul@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 security/selinux/ss/policydb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -2005,6 +2005,7 @@ static int filename_trans_read_helper(st
 		if (!datum)
 			goto out;
 
+		datum->next = NULL;
 		*dst = datum;
 
 		/* ebitmap_read() will at least init the bitmap */
@@ -2017,7 +2018,6 @@ static int filename_trans_read_helper(st
 			goto out;
 
 		datum->otype = le32_to_cpu(buf[0]);
-		datum->next = NULL;
 
 		dst = &datum->next;
 	}


Patches currently in stable-queue which might be from cgzones@xxxxxxxxxxxxxx are

queue-6.4/selinux-set-next-pointer-before-attaching-to-list.patch



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