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Zhengchuan Liang f7cf8ece8c net: caif: clear client service pointer on teardown 
`caif_connect()` can tear down an existing client after remote shutdown by
calling `caif_disconnect_client()` followed by `caif_free_client()`.
`caif_free_client()` releases the service layer referenced by
`adap_layer->dn`, but leaves that pointer stale.

When the socket is later destroyed, `caif_sock_destructor()` calls
`caif_free_client()` again and dereferences the freed service pointer.

Clear the client/service links before releasing the service object so
repeated teardown becomes harmless.

Fixes: 43e3692101 ("caif: Move refcount from service layer to sock and dev.")
Cc: stable@kernel.org
Reported-by: Yifan Wu <yifanwucs@gmail.com>
Reported-by: Juefei Pu <tomapufckgml@gmail.com>
Co-developed-by: Yuan Tan <yuantan098@gmail.com>
Signed-off-by: Yuan Tan <yuantan098@gmail.com>
Suggested-by: Xin Liu <bird@lzu.edu.cn>
Tested-by: Ren Wei <enjou1224z@gmail.com>
Signed-off-by: Zhengchuan Liang <zcliangcn@gmail.com>
Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
Link: https://patch.msgid.link/9f3d37847c0037568aae698ca23cd47c6691acb0.1775897577.git.zcliangcn@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 		2026-04-14 13:21:54 +02:00
..
6lowpan
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9p Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
802 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
8021q Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
appletalk Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
atm atm: lec: fix use-after-free in sock_def_readable() 2026-03-14 08:05:47 -07:00
ax25 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
batman-adv Here are two batman-adv bugfixes: 2026-04-08 18:50:27 -07:00
bluetooth Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync 2026-04-01 16:48:28 -04:00
bpf Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
bridge bridge: guard local VLAN-0 FDB helpers against NULL vlan group 2026-04-03 14:45:51 -07:00
caif net: caif: clear client service pointer on teardown 2026-04-14 13:21:54 +02:00
can can: raw: fix ro->uniq use-after-free in raw_rcv() 2026-04-09 18:51:42 +02:00
ceph libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply() 2026-03-11 10:18:56 +01:00
core net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master 2026-04-14 10:39:23 +02:00
dcb Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
devlink devlink: Fix incorrect skb socket family dumping 2026-04-08 19:34:38 -07:00
dns_resolver
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dsa Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ethernet bonding: prevent potential infinite loop in bond_header_parse() 2026-03-16 19:29:45 -07:00
ethtool Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
handshake treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
hsr net: hsr: fix VLAN add unwind on slave errors 2026-04-02 08:23:49 -07:00
ieee802154 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ife
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ipv4 tcp: Don't set treq->req_usec_ts in cookie_tcp_reqsk_init(). 2026-04-13 15:58:08 -07:00
ipv6 net: ioam6: fix OOB and missing lock 2026-04-08 19:08:56 -07:00
iucv Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
kcm kcm: fix zero-frag skb in frag_list on partial sendmsg error 2026-02-23 17:26:55 -08:00
key net: af_key: zero aligned sockaddr tail in PF_KEY exports 2026-04-07 11:08:24 +02:00
l2tp l2tp: Drop large packets with UDP encap 2026-04-09 10:19:05 +02:00
l3mdev
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lapb treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
llc treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
mac80211 wifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure 2026-03-18 09:09:58 +01:00
mac802154 bonding: prevent potential infinite loop in bond_header_parse() 2026-03-16 19:29:45 -07:00
mctp mctp: route: hold key->lock in mctp_flow_prepare_output() 2026-03-10 11:38:36 +01:00
mpls mpls: add seqcount to protect the platform_label{,s} pair 2026-03-26 18:32:14 -07:00
mptcp Revert "mptcp: add needs_id for netlink appending addr" 2026-04-08 19:31:16 -07:00
ncsi net: ncsi: fix skb leak in error paths 2026-03-06 17:34:48 -08:00
netfilter netfilter: nfnetlink_queue: make hash table per queue 2026-04-08 13:34:51 +02:00
netlabel Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
netlink Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
netrom Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
nfc NFC: digital: Bounds check NFC-A cascade depth in SDD response handler 2026-04-12 11:40:45 -07:00
nsh
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openvswitch openvswitch: validate MPLS set/set_masked payload length 2026-03-20 18:37:31 -07:00
packet net: fix fanout UAF in packet_release() via NETDEV_UP race 2026-03-23 17:07:19 -07:00
phonet bonding: prevent potential infinite loop in bond_header_parse() 2026-03-16 19:29:45 -07:00
psample treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
psp Including fixes from IPsec, Bluetooth and netfilter 2026-02-26 08:00:13 -08:00
qrtr net: qrtr: ns: Fix use-after-free in driver remove() 2026-04-13 15:34:07 -07:00
rds net/rds: Restrict use of RDS/IB to the initial network namespace 2026-04-12 13:33:19 -07:00
rfkill net: rfkill: prevent unlimited numbers of rfkill events from being created 2026-04-07 12:35:04 +02:00
rose net: rose: reject truncated CLEAR_REQUEST frames in state machines 2026-04-12 13:09:45 -07:00
rxrpc rxrpc: proc: size address buffers for %pISpc output 2026-04-08 18:45:32 -07:00
sched net/sched: act_ct: Only release RCU read lock after ct_ft 2026-04-12 09:26:15 -07:00
sctp sctp: disable BH before calling udp_tunnel_xmit_skb() 2026-04-13 16:50:28 -07:00
shaper net: shaper: protect from late creation of hierarchy 2026-03-19 13:47:15 +01:00
smc net/smc: fix double-free of smc_spd_priv when tee() duplicates splice pipe buffer 2026-03-20 18:59:30 -07:00
strparser net: strparser: fix skb_head leak in strp_abort_strp() 2026-04-14 12:37:00 +02:00
sunrpc nfsd-7.0 fixes: 2026-03-18 14:27:11 -07:00
switchdev treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
tipc tipc: fix bc_ackers underflow on duplicate GRP_ACK_MSG 2026-04-03 15:31:17 -07:00
tls net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption 2026-04-07 14:53:42 +02:00
unix af_unix: read UNIX_DIAG_VFS data under unix_state_lock 2026-04-08 19:33:52 -07:00
vmw_vsock vsock: fix buffer size clamping order 2026-04-12 14:31:50 -07:00
wireless wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down 2026-03-06 12:41:59 +01:00
x25 net/x25: Fix overflow when accumulating packets 2026-04-02 13:36:08 +02:00
xdp xsk: validate MTU against usable frame size on bind 2026-04-06 18:43:51 -07:00
xfrm xfrm_user: fix info leak in build_report() 2026-04-07 10:36:38 +02:00
Kconfig
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Kconfig.debug
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Makefile
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compat.c
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devres.c
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socket.c net: Drop the lock in skb_may_tx_timestamp() 2026-02-24 11:27:29 +01:00
sysctl_net.c
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