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Luiz Augusto von Dentz 7d6f9cb24d Bluetooth: L2CAP: Fix user-after-free 
[ Upstream commit 35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f ]

This uses l2cap_chan_hold_unless_zero() after calling
__l2cap_get_chan_blah() to prevent the following trace:

Bluetooth: l2cap_core.c:static void l2cap_chan_destroy(struct kref
*kref)
Bluetooth: chan 0000000023c4974d
Bluetooth: parent 00000000ae861c08
==================================================================
BUG: KASAN: use-after-free in __mutex_waiter_is_first
kernel/locking/mutex.c:191 [inline]
BUG: KASAN: use-after-free in __mutex_lock_common
kernel/locking/mutex.c:671 [inline]
BUG: KASAN: use-after-free in __mutex_lock+0x278/0x400
kernel/locking/mutex.c:729
Read of size 8 at addr ffff888006a49b08 by task kworker/u3:2/389

Link: https://lore.kernel.org/lkml/20220622082716.478486-1-lee.jones@linaro.org
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sungwoo Kim <iam@sung-woo.kim>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-10-26 13:22:51 +02:00
..
6lowpan
6lowpan: iphc: Fix an off-by-one check of array index
2021-09-15 09:47:31 +02:00
9p
net/9p: Initialize the iounit field during fid creation
2022-08-25 11:18:17 +02:00
802
net/802/garp: fix memleak in garp_request_join()
2021-07-31 08:19:38 +02:00
8021q
net: vlan: fix underflow for the real_dev refcnt
2021-12-01 09:23:34 +01:00
appletalk
appletalk: Fix skb allocation size in loopback case
2021-04-07 14:47:41 +02:00
atm
atm: fix a memory leak of vcc->user_back
2020-10-01 13:17:58 +02:00
ax25
ax25: Fix UAF bugs in ax25 timers
2022-04-20 09:19:40 +02:00
batman-adv
batman-adv: Don't skb_split skbuffs with frag_list
2022-05-18 09:47:24 +02:00
bluetooth
Bluetooth: L2CAP: Fix user-after-free
2022-10-26 13:22:51 +02:00
bpf
bpf: Don't redirect packets with invalid pkt_len
2022-09-05 10:27:46 +02:00
bpfilter
bpfilter: Specify the log level for the kmsg message
2021-07-14 16:53:33 +02:00
bridge
netfilter: ebtables: fix memory leak when blob is malformed
2022-09-28 11:04:07 +02:00
caif
net-caif: avoid user-triggerable WARN_ON(1)
2021-09-22 12:26:40 +02:00
can
can: bcm: check the result of can_send() in bcm_can_tx()
2022-10-26 13:22:50 +02:00
ceph
libceph: clear con->out_msg on Policy::stateful_server faults
2020-11-05 11:43:34 +01:00
core
net: If sock is dead don't access sock's sk_wq in sk_stream_wait_memory
2022-10-26 13:22:51 +02:00
dcb
net: dcb: disable softirqs in dcbnl_flush_dev()
2022-03-08 19:07:51 +01:00
dccp
dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock
2022-08-25 11:17:49 +02:00
decnet
net: decnet: Fix sleeping inside in af_decnet
2021-07-28 13:30:56 +02:00
dns_resolver
KEYS: Don't write out to userspace while holding key semaphore
2020-04-23 10:36:45 +02:00
dsa
net: dsa: Add missing of_node_put() in dsa_port_parse_of
2022-03-23 09:12:07 +01:00
ethernet
net: add annotations on hh->hh_len lockless accesses
2020-01-09 10:20:06 +01:00
hsr
hsr: use netdev_err() instead of WARN_ONCE()
2021-05-14 09:44:10 +02:00
ieee802154
net/ieee802154: reject zero-sized raw_sendmsg()
2022-10-26 13:22:26 +02:00
ife
…
ipv4
tcp: annotate data-race around tcp_md5sig_pool_populated
2022-10-26 13:22:48 +02:00
ipv6
netfilter: nft_fib: Fix for rpath check with VRF devices
2022-10-26 13:22:25 +02:00
iucv
net/af_iucv: remove WARN_ONCE on malformed RX packets
2021-03-07 12:20:42 +01:00
kcm
kcm: fix strp_init() order and cleanup
2022-09-15 12:04:50 +02:00
key
af_key: Do not call xfrm_probe_algs in parallel
2022-09-05 10:27:40 +02:00
l2tp
ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg
2022-06-22 14:11:21 +02:00
l3mdev
l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu
2022-04-27 13:50:47 +02:00
lapb
net: lapb: Copy the skb before sending a packet
2021-02-10 09:25:28 +01:00
llc
llc: only change llc->dev when bind() succeeds
2022-03-28 08:46:48 +02:00
mac80211
wifi: mac80211: allow bw change during channel switch in mesh
2022-10-26 13:22:22 +02:00
mac802154
net: mac802154: Fix a condition in the receive path
2022-09-15 12:04:53 +02:00
mpls
net: mpls: Fix notifications when deleting a device
2021-12-08 09:01:12 +01:00
ncsi
net/ncsi: check for error return from call to nla_put_u32
2022-01-05 12:37:45 +01:00
netfilter
netfilter: nfnetlink_osf: fix possible bogus match in nf_osf_find()
2022-09-28 11:04:05 +02:00
netlabel
netlabel: fix out-of-bounds memory accesses
2022-04-15 14:18:35 +02:00
netlink
netlink: do not reset transport header in netlink_recvmsg()
2022-05-18 09:47:25 +02:00
netrom
netrom: Decrease sock refcount when sock timers expire
2021-07-28 13:30:56 +02:00
nfc
NFC: NULL out the dev->rfkill to prevent UAF
2022-06-14 18:11:33 +02:00
nsh
…
openvswitch
openvswitch: Fix overreporting of drops in dropwatch
2022-10-26 13:22:48 +02:00
packet
net/af_packet: check len when min_header_len equals to 0
2022-09-05 10:27:48 +02:00
phonet
phonet: refcount leak in pep_sock_accep
2022-01-11 15:23:33 +01:00
psample
net: psample: fix skb_over_panic
2019-12-04 22:30:54 +01:00
qrtr
net: qrtr: fix another OOB Read in qrtr_endpoint_post
2021-09-03 10:08:12 +02:00
rds
net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()
2022-10-26 13:22:26 +02:00
rfkill
rfkill: Fix use-after-free in rfkill_resume()
2020-11-24 13:29:05 +01:00
rose
rose: check NULL rose_loopback_neigh->loopback
2022-09-05 10:27:40 +02:00
rxrpc
rxrpc: Fix calc of resend age
2022-09-28 11:03:58 +02:00
sched
net: sched: fix possible refcount leak in tc_new_tfilter()
2022-09-28 11:04:07 +02:00
sctp
sctp: handle the error returned from sctp_auth_asoc_init_active_key
2022-10-26 13:22:26 +02:00
smc
net/smc: Remove redundant refcount increase
2022-09-15 12:04:50 +02:00
strparser
bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding
2021-11-17 09:48:48 +01:00
sunrpc
SUNRPC: RPC level errors should set task->tk_rpc_status
2022-09-05 10:27:40 +02:00
switchdev
net: switchdev: do not propagate bridge updates across bridges
2021-10-27 09:54:24 +02:00
tipc
tipc: fix shift wrapping bug in map_get()
2022-09-15 12:04:55 +02:00
tls
net/tls: Fix race in TLS device down flow
2022-07-29 17:14:12 +02:00
unix
af_unix: Fix a data-race in unix_dgram_peer_wake_me().
2022-06-14 18:11:57 +02:00
vmw_vsock
vhost/vsock: Use kvmalloc/kvfree for larger packets.
2022-10-26 13:22:25 +02:00
wimax
…
wireless
wifi: cfg80211: update hidden BSSes to avoid WARN_ON
2022-10-15 07:54:41 +02:00
x25
net/x25: Fix null-ptr-deref caused by x25_disconnect
2022-04-15 14:18:21 +02:00
xdp
Revert "xsk: Do not sleep in poll() when need_wakeup set"
2021-12-22 09:29:40 +01:00
xfrm
xfrm: Update ipcomp_scratches with NULL when freed
2022-10-26 13:22:49 +02:00
compat.c
net: Return the correct errno code
2021-06-18 09:59:00 +02:00
Kconfig
net: Fix CONFIG_NET_CLS_ACT=n and CONFIG_NFT_FWD_NETDEV={y, m} build
2020-04-01 11:02:18 +02:00
Makefile
…
socket.c
net: Fix a data-race around sysctl_somaxconn.
2022-09-05 10:27:42 +02:00
sysctl_net.c
…