This is a note to let you know that I've just added the patch titled
scsi: sg: off by one in sg_ioctl()
to the 4.4-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:
scsi-sg-off-by-one-in-sg_ioctl.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From bd46fc406b30d1db1aff8dabaff8d18bb423fdcf Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Thu, 17 Aug 2017 10:09:54 +0300
Subject: scsi: sg: off by one in sg_ioctl()
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit bd46fc406b30d1db1aff8dabaff8d18bb423fdcf upstream.
If "val" is SG_MAX_QUEUE then we are one element beyond the end of the
"rinfo" array so the > should be >=.
Fixes: 109bade9c625 ("scsi: sg: use standard lists for sg_requests")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Douglas Gilbert <dgilbert@xxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/sg.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1041,7 +1041,7 @@ sg_ioctl(struct file *filp, unsigned int
read_lock_irqsave(&sfp->rq_list_lock, iflags);
val = 0;
list_for_each_entry(srp, &sfp->rq_list, entry) {
- if (val > SG_MAX_QUEUE)
+ if (val >= SG_MAX_QUEUE)
break;
memset(&rinfo[val], 0, SZ_SG_REQ_INFO);
rinfo[val].req_state = srp->done + 1;
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-4.4/scsi-sg-off-by-one-in-sg_ioctl.patch