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linux/net/mac802154
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Wei Yongjun 1831d45404 mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() 
[ Upstream commit b3d72d3135 ]

Kernel fault injection test reports null-ptr-deref as follows:

BUG: kernel NULL pointer dereference, address: 0000000000000008
RIP: 0010:cfg802154_netdev_notifier_call+0x120/0x310 include/linux/list.h:114
Call Trace:
 <TASK>
 raw_notifier_call_chain+0x6d/0xa0 kernel/notifier.c:87
 call_netdevice_notifiers_info+0x6e/0xc0 net/core/dev.c:1944
 unregister_netdevice_many_notify+0x60d/0xcb0 net/core/dev.c:1982
 unregister_netdevice_queue+0x154/0x1a0 net/core/dev.c:10879
 register_netdevice+0x9a8/0xb90 net/core/dev.c:10083
 ieee802154_if_add+0x6ed/0x7e0 net/mac802154/iface.c:659
 ieee802154_register_hw+0x29c/0x330 net/mac802154/main.c:229
 mcr20a_probe+0xaaa/0xcb1 drivers/net/ieee802154/mcr20a.c:1316

ieee802154_if_add() allocates wpan_dev as netdev's private data, but not
init the list in struct wpan_dev. cfg802154_netdev_notifier_call() manage
the list when device register/unregister, and may lead to null-ptr-deref.

Use INIT_LIST_HEAD() on it to initialize it correctly.

Fixes: fcf39e6e88 ("ieee802154: add wpan_dev_list")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Alexander Aring <aahringo@redhat.com>

Link: https://lore.kernel.org/r/20221130091705.1831140-1-weiyongjun@huaweicloud.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-14 11:30:45 +01:00
..
cfg.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
cfg.h
driver-ops.h
ieee802154_i.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
iface.c mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() 2022-12-14 11:30:45 +01:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
llsec.c net: mac802154: Fix general protection fault 2021-04-14 08:24:18 +02:00
llsec.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
mac_cmd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
main.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mib.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
rx.c mac802154: Fix LQI recording 2022-11-03 23:56:53 +09:00
trace.c
trace.h net/mac802154: disambiguate mac80215 vs mac802154 trace events 2018-03-28 22:55:18 +02:00
tx.c mac802154: tx: fix use-after-free 2020-10-01 13:18:17 +02:00
util.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00