Cong Wang c39b8fd499 ax25: fix a use-after-free in ax25_fillin_cb() ...

[ Upstream commit c433570458 ]

There are multiple issues here:

1. After freeing dev->ax25_ptr, we need to set it to NULL otherwise
   we may use a dangling pointer.

2. There is a race between ax25_setsockopt() and device notifier as
   reported by syzbot. Close it by holding RTNL lock.

3. We need to test if dev->ax25_ptr is NULL before using it.

Reported-and-tested-by: syzbot+ae6bb869cbed29b29040@syzkaller.appspotmail.com
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-01-09 16:16:39 +01:00

..

af_ax25.c

ax25: fix a use-after-free in ax25_fillin_cb()

2019-01-09 16:16:39 +01:00

ax25_addr.c

small cleanup in ax25_addr_parse()

2012-07-09 00:16:16 -07:00

ax25_dev.c

ax25: fix a use-after-free in ax25_fillin_cb()

2019-01-09 16:16:39 +01:00

ax25_ds_in.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

ax25_ds_subr.c

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

ax25_ds_timer.c

AX.25: Close socket connection on session completion

2016-06-18 20:55:34 -07:00

ax25_iface.c

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

ax25_in.c

ax25: Stop using sock->sk_protinfo.

2015-06-28 16:55:44 -07:00

ax25_ip.c

ax25: add link layer header validation function

2016-03-09 22:13:01 -05:00

ax25_out.c

netfilter: Remove spurios included of netfilter.h

2015-06-18 21:14:32 +02:00

ax25_route.c

net: use consume_skb() in place of kfree_skb()

2012-06-04 11:27:40 -04:00

ax25_std_in.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

ax25_std_subr.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

ax25_std_timer.c

AX.25: Close socket connection on session completion

2016-06-18 20:55:34 -07:00

ax25_subr.c

ax25: Fix segfault after sock connection timeout

2017-02-04 09:47:09 +01:00

ax25_timer.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

ax25_uid.c

netfilter: Remove spurios included of netfilter.h

2015-06-18 21:14:32 +02:00

Kconfig

Update broken web addresses in the kernel.

2010-10-18 11:03:14 +02:00

Makefile

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sysctl_net_ax25.c

net: Convert uses of typedef ctl_table to struct ctl_table

2013-06-13 02:36:09 -07:00

TODO

[AX25]: Remove obsolete references to BKL from TODO file.

2008-03-26 02:14:38 -07:00