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Oleksij Rempel 021a98a878 can: j1939: transport: j1939_xtp_rx_dat_one(): compare own packets to detect corruptions 
[ Upstream commit e052d0540298bfe0f6cbbecdc7e2ea9b859575b2 ]

Since the stack relays on receiving own packets, it was overwriting own
transmit buffer from received packets.

At least theoretically, the received echo buffer can be corrupt or
changed and the session partner can request to resend previous data. In
this case we will re-send bad data.

With this patch we will stop to overwrite own TX buffer and use it for
sanity checking.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20200807105200.26441-6-o.rempel@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-09-03 11:26:58 +02:00
..
6lowpan
6lowpan: no need to check return value of debugfs_create functions
2019-07-06 12:50:01 +02:00
9p
net/9p: validate fds in p9_fd_open
2020-08-11 15:33:36 +02:00
802
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
8021q
vlan: vlan_changelink() should propagate errors
2020-01-12 12:21:50 +01:00
appletalk
appletalk: Fix atalk_proc_init() return path
2020-08-11 15:33:40 +02:00
atm
net: atm: Reduce the severity of logging in unlink_clip_vcc
2019-11-18 17:08:20 -08:00
ax25
AX.25: Prevent integer overflows in connect and sendmsg
2020-07-31 18:39:31 +02:00
batman-adv
batman-adv: Revert "disable ethtool link speed detection when auto negotiation off"
2020-06-22 09:30:56 +02:00
bluetooth
Bluetooth: add a mutex lock to avoid UAF in do_enale_set
2020-08-19 08:15:59 +02:00
bpf
bpf/flow_dissector: support flags in BPF_PROG_TEST_RUN
2019-07-25 18:00:41 -07:00
bpfilter
net/bpfilter: remove superfluous testing message
2020-04-21 09:04:53 +02:00
bridge
netfilter: avoid ipv6 -> nf_defrag_ipv6 module dependency
2020-09-03 11:26:58 +02:00
caif
net: use skb_queue_empty_lockless() in poll() handlers
2019-10-28 13:33:41 -07:00
can
can: j1939: transport: j1939_xtp_rx_dat_one(): compare own packets to detect corruptions
2020-09-03 11:26:58 +02:00
ceph
libceph: don't omit recovery_deletes in target_copy()
2020-07-22 09:33:17 +02:00
core
net: Fix potential wrong skb->protocol in skb_vlan_untag()
2020-09-03 11:26:39 +02:00
dcb
…
dccp
dccp: Fix possible memleak in dccp_init and dccp_fini
2020-06-17 16:40:32 +02:00
decnet
net: add bool confirm_neigh parameter for dst_ops.update_pmtu
2020-01-04 19:18:58 +01:00
dns_resolver
KEYS: Don't write out to userspace while holding key semaphore
2020-04-23 10:36:45 +02:00
dsa
net: dsa: declare lockless TX feature for slave ports
2020-06-03 08:21:38 +02:00
ethernet
net: add annotations on hh->hh_len lockless accesses
2020-01-09 10:20:06 +01:00
hsr
hsr: check protocol version in hsr_newlink()
2020-04-21 09:04:44 +02:00
ieee802154
nl802154: add missing attribute validation for dev_type
2020-03-18 07:17:44 +01:00
ife
net: Fix Kconfig indentation
2019-09-26 08:56:17 +02:00
ipv4
net: nexthop: don't allow empty NHA_GROUP
2020-09-03 11:26:40 +02:00
ipv6
netfilter: avoid ipv6 -> nf_defrag_ipv6 module dependency
2020-09-03 11:26:58 +02:00
iucv
net/af_iucv: mark expected switch fall-throughs
2019-07-29 10:26:14 -07:00
kcm
kcm: disable preemption in kcm_parse_func_strparser()
2019-09-27 10:27:14 +02:00
key
xfrm: policy: match with both mark and mask on user interfaces
2020-08-05 09:59:44 +02:00
l2tp
l2tp: remove skb_dst_set() from l2tp_xmit_skb()
2020-07-22 09:32:47 +02:00
l3mdev
ipv6: convert major tx path to use RT6_LOOKUP_F_DST_NOREF
2019-06-23 13:24:17 -07:00
lapb
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-17 20:20:36 -07:00
llc
llc: make sure applications use ARPHRD_ETHER
2020-07-22 09:32:47 +02:00
mac80211
mac80211: fix misplaced while instead of if
2020-08-21 13:05:26 +02:00
mac802154
…
mpls
net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup
2019-12-18 16:08:42 +01:00
ncsi
net/ncsi: Disable global multicast filter
2019-09-19 18:04:40 -07:00
netfilter
netfilter: nf_tables: nft_exthdr: the presence return value should be little-endian
2020-08-26 10:40:59 +02:00
netlabel
netlabel: cope with NULL catmap
2020-05-20 08:20:08 +02:00
netlink
genetlink: remove genl_bind
2020-07-22 09:32:46 +02:00
netrom
net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node
2020-04-29 16:33:08 +02:00
nfc
net/nfc/rawsock.c: add CAP_NET_RAW check.
2020-08-19 08:16:22 +02:00
nsh
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
openvswitch
openvswitch: Prevent kernel-infoleak in ovs_ct_put_key()
2020-08-11 15:33:41 +02:00
packet
af_packet: TPACKET_V3: fix fill status rwlock imbalance
2020-08-19 08:16:22 +02:00
phonet
net: use skb_queue_empty_lockless() in poll() handlers
2019-10-28 13:33:41 -07:00
psample
net: psample: fix skb_over_panic
2019-12-04 22:30:54 +01:00
qrtr
net: qrtr: fix usage of idr in port assignment to socket
2020-09-03 11:26:40 +02:00
rds
rds: Prevent kernel-infoleak in rds_notify_queue_get()
2020-08-05 09:59:44 +02:00
rfkill
rfkill: Fix incorrect check to avoid NULL pointer dereference
2020-01-12 12:21:33 +01:00
rose
net: core: add generic lockdep keys
2019-10-24 14:53:48 -07:00
rxrpc
rxrpc: Fix race between recvmsg and sendmsg on immediate call failure
2020-08-11 15:33:40 +02:00
sched
net/sched: act_ct: Fix skb double-free in tcf_ct_handle_fragments() error flow
2020-09-03 11:26:40 +02:00
sctp
net: sctp: Fix negotiation of the number of data streams.
2020-09-03 11:26:40 +02:00
smc
net/smc: Prevent kernel-infoleak in __smc_diag_dump()
2020-09-03 11:26:40 +02:00
strparser
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-22 08:59:24 -04:00
sunrpc
svcrdma: Fix another Receive buffer leak
2020-08-26 10:40:55 +02:00
switchdev
…
tipc
tipc: fix uninit skb->data in tipc_nl_compat_dumpit()
2020-09-03 11:26:40 +02:00
tls
net/tls: Fix kmap usage
2020-08-19 08:16:23 +02:00
unix
af_unix: add compat_ioctl support
2020-01-17 19:48:52 +01:00
vmw_vsock
vsock/virtio: annotate 'the_virtio_vsock' RCU pointer
2020-07-29 10:18:31 +02:00
wimax
wimax: no need to check return value of debugfs_create functions
2019-08-10 15:25:47 -07:00
wireless
cfg80211: check vendor command doit pointer before use
2020-08-11 15:33:38 +02:00
x25
net/x25: Fix null-ptr-deref in x25_disconnect
2020-08-05 09:59:44 +02:00
xdp
xdp: Fix xsk_generic_xmit errno
2020-06-24 17:50:44 +02:00
xfrm
xfrm: policy: match with both mark and mask on user interfaces
2020-08-05 09:59:44 +02:00
compat.c
net/compat: Add missing sock updates for SCM_RIGHTS
2020-08-21 13:05:25 +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: Set fput_needed iff FDPUT_FPUT is set
2020-08-19 08:16:22 +02:00
sysctl_net.c
…