[3.19.y-ckt stable] Patch "irda: precedence bug in irlmp_seq_hb_idx()" has been added to staging queue
Kamal Mostafa
kamal at canonical.com
Mon Nov 30 22:08:59 UTC 2015
This is a note to let you know that I have just added a patch titled
irda: precedence bug in irlmp_seq_hb_idx()
to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue
This patch is scheduled to be released in version 3.19.8-ckt11.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
------
>From 287b14185114bf99d7ed1e94d8a87d1f2e6cf6b0 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter at oracle.com>
Date: Mon, 19 Oct 2015 13:16:49 +0300
Subject: irda: precedence bug in irlmp_seq_hb_idx()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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[ Upstream commit 50010c20597d14667eff0fdb628309986f195230 ]
This is decrementing the pointer, instead of the value stored in the
pointer. KASan detects it as an out of bounds reference.
Reported-by: "Berry Cheng 程君(成淼)" <chengmiao.cj at alibaba-inc.com>
Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
net/irda/irlmp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/irda/irlmp.c b/net/irda/irlmp.c
index a26c401..4396459 100644
--- a/net/irda/irlmp.c
+++ b/net/irda/irlmp.c
@@ -1839,7 +1839,7 @@ static void *irlmp_seq_hb_idx(struct irlmp_iter_state *iter, loff_t *off)
for (element = hashbin_get_first(iter->hashbin);
element != NULL;
element = hashbin_get_next(iter->hashbin)) {
- if (!off || *off-- == 0) {
+ if (!off || (*off)-- == 0) {
/* NB: hashbin left locked */
return element;
}
--
1.9.1
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