From: Jia-Ju Bai <baijiaju1990@gmail.com>
To: steffen.klassert@secunet.com, herbert@gondor.apana.org.au,
davem@davemloft.net
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [BUG] net: xfrm: possible null-pointer dereferences in xfrm_policy()
Date: Mon, 29 Jul 2019 11:43:49 +0800 [thread overview]
Message-ID: <464bb93d-75b2-c21b-ee32-25a10ff61622@gmail.com> (raw)
In xfrm_policy(), the while loop on lines 3802-3830 ends when dst->xfrm
is NULL.
Then, dst->xfrm is used on line 3840:
xfrm_state_mtu(dst->xfrm, mtu);
if (x->km.state != XFRM_STATE_VALID...)
aead = x->data;
Thus, possible null-pointer dereferences may occur.
These bugs are found by a static analysis tool STCheck written by us.
I do not know how to correctly fix these bugs, so I only report them.
Best wishes,
Jia-Ju Bai
next reply other threads:[~2019-07-29 3:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-29 3:43 Jia-Ju Bai [this message]
2019-07-29 8:03 ` [BUG] net: xfrm: possible null-pointer dereferences in xfrm_policy() Steffen Klassert
2019-07-29 8:06 ` Jia-Ju Bai
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