Messages in this thread | | | Date | Mon, 29 Jul 2019 09:47:42 -0700 (PDT) | Subject | Re: [PATCH v3] net: sched: Fix a possible null-pointer dereference in dequeue_func() | From | David Miller <> |
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From: Jia-Ju Bai <baijiaju1990@gmail.com> Date: Mon, 29 Jul 2019 16:24:33 +0800
> In dequeue_func(), there is an if statement on line 74 to check whether > skb is NULL: > if (skb) > > When skb is NULL, it is used on line 77: > prefetch(&skb->end); > > Thus, a possible null-pointer dereference may occur. > > To fix this bug, skb->end is used when skb is not NULL. > > This bug is found by a static analysis tool STCheck written by us. > > Fixes: 76e3cc126bb2 ("codel: Controlled Delay AQM") > Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Applied and queued up for -stable.
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