This is a note to let you know that I've just added the patch titled
dm clone: Fix UAF in clone_dtr()
to the 6.1-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:
dm-clone-fix-uaf-in-clone_dtr.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e4b5957c6f749a501c464f92792f1c8e26b61a94 Mon Sep 17 00:00:00 2001
From: Luo Meng <luomeng12@xxxxxxxxxx>
Date: Tue, 29 Nov 2022 10:48:48 +0800
Subject: dm clone: Fix UAF in clone_dtr()
From: Luo Meng <luomeng12@xxxxxxxxxx>
commit e4b5957c6f749a501c464f92792f1c8e26b61a94 upstream.
Dm_clone also has the same UAF problem when dm_resume()
and dm_destroy() are concurrent.
Therefore, cancelling timer again in clone_dtr().
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 7431b7835f554 ("dm: add clone target")
Signed-off-by: Luo Meng <luomeng12@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm-clone-target.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/md/dm-clone-target.c
+++ b/drivers/md/dm-clone-target.c
@@ -1958,6 +1958,7 @@ static void clone_dtr(struct dm_target *
mempool_exit(&clone->hydration_pool);
dm_kcopyd_client_destroy(clone->kcopyd_client);
+ cancel_delayed_work_sync(&clone->waker);
destroy_workqueue(clone->wq);
hash_table_exit(clone);
dm_clone_metadata_close(clone->cmd);
Patches currently in stable-queue which might be from luomeng12@xxxxxxxxxx are
queue-6.1/dm-integrity-fix-uaf-in-dm_integrity_dtr.patch
queue-6.1/dm-clone-fix-uaf-in-clone_dtr.patch
queue-6.1/dm-thin-resume-even-if-in-fail-mode.patch
queue-6.1/dm-cache-fix-uaf-in-destroy.patch
queue-6.1/dm-thin-fix-uaf-in-run_timer_softirq.patch
