This is a note to let you know that I've just added the patch titled
dm integrity: Fix UAF in dm_integrity_dtr()
to the 5.10-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-integrity-fix-uaf-in-dm_integrity_dtr.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f50cb2cbabd6c4a60add93d72451728f86e4791c Mon Sep 17 00:00:00 2001
From: Luo Meng <luomeng12@xxxxxxxxxx>
Date: Tue, 29 Nov 2022 10:48:50 +0800
Subject: dm integrity: Fix UAF in dm_integrity_dtr()
From: Luo Meng <luomeng12@xxxxxxxxxx>
commit f50cb2cbabd6c4a60add93d72451728f86e4791c upstream.
Dm_integrity also has the same UAF problem when dm_resume()
and dm_destroy() are concurrent.
Therefore, cancelling timer again in dm_integrity_dtr().
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 7eada909bfd7a ("dm: add integrity 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-integrity.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -4388,6 +4388,8 @@ static void dm_integrity_dtr(struct dm_t
BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));
BUG_ON(!list_empty(&ic->wait_list));
+ if (ic->mode == 'B')
+ cancel_delayed_work_sync(&ic->bitmap_flush_work);
if (ic->metadata_wq)
destroy_workqueue(ic->metadata_wq);
if (ic->wait_wq)
Patches currently in stable-queue which might be from luomeng12@xxxxxxxxxx are
queue-5.10/dm-integrity-fix-uaf-in-dm_integrity_dtr.patch
queue-5.10/dm-clone-fix-uaf-in-clone_dtr.patch
queue-5.10/dm-thin-resume-even-if-in-fail-mode.patch
queue-5.10/dm-cache-fix-uaf-in-destroy.patch
queue-5.10/dm-thin-fix-uaf-in-run_timer_softirq.patch
