This is a note to let you know that I've just added the patch titled
SCSI: megaraid: missing bounds check in mimd_to_kioc()
to the 3.4-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-megaraid-missing-bounds-check-in-mimd_to_kioc.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3de2260140417759c669d391613d583baf03b0cf Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Wed, 30 Oct 2013 20:13:51 +0300
Subject: SCSI: megaraid: missing bounds check in mimd_to_kioc()
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit 3de2260140417759c669d391613d583baf03b0cf upstream.
pthru32->dataxferlen comes from the user so we need to check that it's
not too large so we don't overflow the buffer.
Reported-by: Nico Golde <nico@xxxxxxxxx>
Reported-by: Fabian Yamaguchi <fabs@xxxxxxxxx>
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Sumit Saxena <sumit.saxena@xxxxxxx>
Signed-off-by: James Bottomley <JBottomley@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_mm.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/scsi/megaraid/megaraid_mm.c
+++ b/drivers/scsi/megaraid/megaraid_mm.c
@@ -486,6 +486,8 @@ mimd_to_kioc(mimd_t __user *umimd, mraid
pthru32->dataxferaddr = kioc->buf_paddr;
if (kioc->data_dir & UIOC_WR) {
+ if (pthru32->dataxferlen > kioc->xferlen)
+ return -EINVAL;
if (copy_from_user(kioc->buf_vaddr, kioc->user_data,
pthru32->dataxferlen)) {
return (-EFAULT);
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-3.4/scsi-megaraid-missing-bounds-check-in-mimd_to_kioc.patch
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