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YueHaibing 3c3941bb1e can: bcm: Fix UAF in bcm_proc_show() 
commit 55c3b96074 upstream.

BUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80
Read of size 8 at addr ffff888155846230 by task cat/7862

CPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xd5/0x150
 print_report+0xc1/0x5e0
 kasan_report+0xba/0xf0
 bcm_proc_show+0x969/0xa80
 seq_read_iter+0x4f6/0x1260
 seq_read+0x165/0x210
 proc_reg_read+0x227/0x300
 vfs_read+0x1d5/0x8d0
 ksys_read+0x11e/0x240
 do_syscall_64+0x35/0xb0
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Allocated by task 7846:
 kasan_save_stack+0x1e/0x40
 kasan_set_track+0x21/0x30
 __kasan_kmalloc+0x9e/0xa0
 bcm_sendmsg+0x264b/0x44e0
 sock_sendmsg+0xda/0x180
 ____sys_sendmsg+0x735/0x920
 ___sys_sendmsg+0x11d/0x1b0
 __sys_sendmsg+0xfa/0x1d0
 do_syscall_64+0x35/0xb0
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 7846:
 kasan_save_stack+0x1e/0x40
 kasan_set_track+0x21/0x30
 kasan_save_free_info+0x27/0x40
 ____kasan_slab_free+0x161/0x1c0
 slab_free_freelist_hook+0x119/0x220
 __kmem_cache_free+0xb4/0x2e0
 rcu_core+0x809/0x1bd0

bcm_op is freed before procfs entry be removed in bcm_release(),
this lead to bcm_proc_show() may read the freed bcm_op.

Fixes: ffd980f976 ("[CAN]: Add broadcast manager (bcm) protocol")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/all/20230715092543.15548-1-yuehaibing@huawei.com
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-07-27 08:46:55 +02:00
..
6lowpan
6lowpan: iphc: Fix an off-by-one check of array index
2021-07-22 16:19:03 +02:00
9p
9p/xen : Fix use after free bug in xen_9pfs_front_remove due to race condition
2023-04-20 12:13:53 +02:00
802
mrp: introduce active flags to prevent UAF when applicant uninit
2022-12-31 13:14:42 +01:00
8021q
vlan: fix a potential uninit-value in vlan_dev_hard_start_xmit()
2023-05-24 17:36:52 +01:00
appletalk
net: socket: rework compat_ifreq_ioctl()
2021-07-23 14:20:25 +01:00
atm
atm: hide unused procfs functions
2023-06-09 10:32:26 +02:00
ax25
net: ax25: Fix deadlock caused by skb_recv_datagram in ax25_recvmsg
2022-06-22 14:22:01 +02:00
batman-adv
batman-adv: Broken sync while rescheduling delayed work
2023-06-14 11:13:04 +02:00
bluetooth
Bluetooth: Fix use-after-free in hci_remove_ltk/hci_remove_irk
2023-06-14 11:13:06 +02:00
bpf
bpf: Move skb->len == 0 checks into __bpf_redirect
2022-12-31 13:14:11 +01:00
bpfilter
…
bridge
net: bridge: keep ports without IFF_UNICAST_FLT in BR_PROMISC mode
2023-07-23 13:47:29 +02:00
caif
net: caif: Fix use-after-free in cfusbl_device_notify()
2023-03-17 08:48:54 +01:00
can
can: bcm: Fix UAF in bcm_proc_show()
2023-07-27 08:46:55 +02:00
ceph
libceph: harden msgr2.1 frame segment length checks
2023-07-23 13:47:53 +02:00
core
net: prevent skb corruption on frag list segmentation
2023-07-23 13:47:41 +02:00
dcb
net: dcb: disable softirqs in dcbnl_flush_dev()
2022-03-08 19:12:52 +01:00
dccp
dccp: Call inet6_destroy_sock() via sk->sk_destruct().
2023-04-26 13:51:54 +02:00
dns_resolver
…
dsa
net: dsa: tag_sja1105: fix MAC DA patching from meta frames
2023-07-23 13:47:30 +02:00
ethernet
move netdev_boot_setup into Space.c
2021-08-03 13:05:26 +01:00
ethtool
ethtool: Fix uninitialized number of lanes
2023-05-17 11:50:18 +02:00
hsr
hsr: ratelimit only when errors are printed
2023-04-05 11:25:02 +02:00
ieee802154
net: ieee802154: fix error return code in dgram_bind()
2022-11-03 23:59:14 +09:00
ife
…
ipv4
tcp: annotate data races in __tcp_oow_rate_limited()
2023-07-23 13:47:29 +02:00
ipv6
ipv6/addrconf: fix a potential refcount underflow for idev
2023-07-23 13:47:42 +02:00
iucv
net/iucv: Fix size of interrupt data
2023-03-22 13:31:28 +01:00
kcm
kcm: close race conditions on sk_receive_queue
2022-11-26 09:24:50 +01:00
key
af_key: Reject optional tunnel/BEET mode templates in outbound policies
2023-05-24 17:36:49 +01:00
l2tp
inet6: Remove inet6_destroy_sock() in sk->sk_prot->destroy().
2023-04-26 13:51:54 +02:00
l3mdev
l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu
2022-04-27 14:38:53 +02:00
lapb
…
llc
net: deal with most data-races in sk_wait_event()
2023-05-24 17:36:42 +01:00
mac80211
wifi: mac80211: simplify chanctx allocation
2023-06-09 10:32:25 +02:00
mac802154
mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add()
2022-12-14 11:37:25 +01:00
mctp
net: mctp: purge receive queues on sk destruction
2023-02-06 07:59:02 +01:00
mpls
net: mpls: fix stale pointer if allocation fails during device rename
2023-02-22 12:57:09 +01:00
mptcp
mptcp: consolidate fallback and non fallback state machine
2023-07-05 18:25:04 +01:00
ncsi
net/ncsi: clear Tx enable mode when handling a Config required AEN
2023-05-17 11:50:16 +02:00
netfilter
netfilter: nf_tables: prevent OOB access in nft_byteorder_eval
2023-07-23 13:47:37 +02:00
netlabel
netlabel: fix out-of-bounds memory accesses
2022-04-13 20:59:10 +02:00
netlink
netlink: Add __sock_i_ino() for __netlink_diag_dump().
2023-07-23 13:46:56 +02:00
netrom
netrom: fix info-leak in nr_write_internal()
2023-06-09 10:32:16 +02:00
nfc
net: nfc: Fix use-after-free caused by nfc_llcp_find_local
2023-07-23 13:46:56 +02:00
nsh
net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()
2023-05-24 17:36:51 +01:00
openvswitch
net: openvswitch: fix possible memory leak in ovs_meter_cmd_set()
2023-02-22 12:57:09 +01:00
packet
af_packet: do not use READ_ONCE() in packet_bind()
2023-06-09 10:32:17 +02:00
phonet
phonet: refcount leak in pep_sock_accep
2022-01-11 15:35:16 +01:00
psample
…
qrtr
net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume()
2023-04-20 12:13:53 +02:00
rds
rds: rds_rm_zerocopy_callback() correct order for list_add_tail()
2023-03-10 09:39:16 +01:00
rfkill
rfkill: make new event layout opt-in
2022-04-08 14:23:00 +02:00
rose
net/rose: Fix to not accept on connected socket
2023-02-22 12:57:02 +01:00
rxrpc
rxrpc: Fix hard call timeout units
2023-05-17 11:50:17 +02:00
sched
net/sched: sch_qfq: reintroduce lmax bound check for MTU
2023-07-23 13:47:58 +02:00
sctp
sctp: fix potential deadlock on &net->sctp.addr_wq_lock
2023-07-23 13:47:27 +02:00
smc
net/smc: Avoid to access invalid RMBs' MRs in SMCRv1 ADD LINK CONT
2023-06-14 11:13:01 +02:00
strparser
bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding
2021-11-18 19:17:11 +01:00
sunrpc
SUNRPC: Fix UAF in svc_tcp_listen_data_ready()
2023-07-23 13:47:20 +02:00
switchdev
net: make switchdev_bridge_port_{,unoffload} loosely coupled with the bridge
2021-08-04 12:35:07 +01:00
tipc
net: tipc: resize nlattr array to correct size
2023-06-21 15:59:18 +02:00
tls
net: deal with most data-races in sk_wait_event()
2023-05-24 17:36:42 +01:00
unix
af_unix: Fix data races around sk->sk_shutdown.
2023-05-24 17:36:42 +01:00
vmw_vsock
vsock: avoid to close connected socket after the timeout
2023-05-24 17:36:49 +01:00
wireless
wifi: cfg80211: rewrite merging of inherited elements
2023-07-23 13:46:53 +02:00
x25
net/x25: Fix to not accept on connected socket
2023-02-09 11:26:40 +01:00
xdp
xsk: Honor SO_BINDTODEVICE on bind
2023-07-23 13:47:29 +02:00
xfrm
xfrm: Ensure policies always checked on XFRM-I input path
2023-06-28 10:29:45 +02:00
compat.c
…
devres.c
…
Kconfig
Remove DECnet support from kernel
2023-06-21 15:59:15 +02:00
Makefile
Remove DECnet support from kernel
2023-06-21 15:59:15 +02:00
socket.c
net: annotate sk->sk_err write from do_recvmmsg()
2023-05-24 17:36:42 +01:00
sysctl_net.c
…