From: Tomas Henzl thenzl@redhat.com
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@redhat.com Cc: stable@vger.kernel.org Signed-off-by: Tomas Henzl thenzl@redhat.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/ses.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/scsi/ses.c +++ b/drivers/scsi/ses.c @@ -856,7 +856,8 @@ 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);