From: Florian Westphal <fw@strlen.de>
To: Dong Chenchen <dongchenchen2@huawei.com>
Cc: steffen.klassert@secunet.com, herbert@gondor.apana.org.au,
davem@davemloft.net, fw@strlen.de, leon@kernel.org,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
timo.teras@iki.fi, yuehaibing@huawei.com, weiyongjun1@huawei.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [Patch net, v2] net: xfrm: skip policies marked as dead while reinserting policies
Date: Mon, 14 Aug 2023 16:12:28 +0200 [thread overview]
Message-ID: <20230814141228.GC25551@breakpoint.cc> (raw)
In-Reply-To: <20230814140013.712001-1-dongchenchen2@huawei.com>
Dong Chenchen <dongchenchen2@huawei.com> wrote:
> BUG: KASAN: slab-use-after-free in xfrm_policy_inexact_list_reinsert+0xb6/0x430
> Read of size 1 at addr ffff8881051f3bf8 by task ip/668
>
> CPU: 2 PID: 668 Comm: ip Not tainted 6.5.0-rc5-00182-g25aa0bebba72-dirty #64
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13 04/01/2014
> Call Trace:
> <TASK>
> dump_stack_lvl+0x72/0xa0
> print_report+0xd0/0x620
> kasan_report+0xb6/0xf0
> xfrm_policy_inexact_list_reinsert+0xb6/0x430
> xfrm_policy_inexact_insert_node.constprop.0+0x537/0x800
> xfrm_policy_inexact_alloc_chain+0x23f/0x320
> xfrm_policy_inexact_insert+0x6b/0x590
> xfrm_policy_insert+0x3b1/0x480
> xfrm_add_policy+0x23c/0x3c0
> xfrm_user_rcv_msg+0x2d0/0x510
> netlink_rcv_skb+0x10d/0x2d0
> xfrm_netlink_rcv+0x49/0x60
> netlink_unicast+0x3fe/0x540
> netlink_sendmsg+0x528/0x970
> sock_sendmsg+0x14a/0x160
> ____sys_sendmsg+0x4fc/0x580
> ___sys_sendmsg+0xef/0x160
> __sys_sendmsg+0xf7/0x1b0
> do_syscall_64+0x3f/0x90
> entry_SYSCALL_64_after_hwframe+0x73/0xdd
Thanks for following up.
Acked-by: Florian Westphal <fw@strlen.de>
next prev parent reply other threads:[~2023-08-14 14:14 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-14 14:00 [Patch net, v2] net: xfrm: skip policies marked as dead while reinserting policies Dong Chenchen
2023-08-14 14:12 ` Florian Westphal [this message]
2023-08-15 6:00 ` Leon Romanovsky
2023-08-15 8:47 ` Dong Chenchen
2023-08-15 6:04 ` Florian Westphal
2023-08-15 7:30 ` Leon Romanovsky
2023-08-15 7:51 ` Herbert Xu
2023-08-15 8:05 ` Leon Romanovsky
2023-08-15 9:13 ` Leon Romanovsky
2023-08-15 11:35 ` Dong Chenchen
2023-08-15 12:32 ` Leon Romanovsky
2023-08-15 13:43 ` Dong Chenchen
2023-08-15 18:19 ` Leon Romanovsky
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