This is a note to let you know that I've just added the patch titled
scsi: ses: Fix slab-out-of-bounds in ses_intf_remove()
to the 4.19-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:
scsi-ses-fix-slab-out-of-bounds-in-ses_intf_remove.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 578797f0c8cbc2e3ec5fc0dab87087b4c7073686 Mon Sep 17 00:00:00 2001
From: Tomas Henzl <thenzl@xxxxxxxxxx>
Date: Thu, 2 Feb 2023 17:24:51 +0100
Subject: scsi: ses: Fix slab-out-of-bounds in ses_intf_remove()
From: Tomas Henzl <thenzl@xxxxxxxxxx>
commit 578797f0c8cbc2e3ec5fc0dab87087b4c7073686 upstream.
A fix for:
BUG: KASAN: slab-out-of-bounds in ses_intf_remove+0x23f/0x270 [ses]
Read of size 8 at addr ffff88a10d32e5d8 by task rmmod/12013
When edev->components is zero, accessing edev->component[0] members is
wrong.
Link: https://lore.kernel.org/r/20230202162451.15346-5-thenzl@xxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Tomas Henzl <thenzl@xxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/ses.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -872,7 +872,8 @@ static void ses_intf_remove_enclosure(st
kfree(ses_dev->page2);
kfree(ses_dev);
- kfree(edev->component[0].scratch);
+ if (edev->components)
+ kfree(edev->component[0].scratch);
put_device(&edev->edev);
enclosure_unregister(edev);
Patches currently in stable-queue which might be from thenzl@xxxxxxxxxx are
queue-4.19/scsi-ses-fix-possible-desc_ptr-out-of-bounds-accesses.patch
queue-4.19/scsi-ses-fix-slab-out-of-bounds-in-ses_enclosure_data_process.patch
queue-4.19/scsi-ses-fix-possible-addl_desc_ptr-out-of-bounds-accesses.patch
queue-4.19/scsi-ses-fix-slab-out-of-bounds-in-ses_intf_remove.patch
