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Eric Dumazet 48fa874498 ipv6: fix out-of-bound access in ip6_parse_tlv() 
[ Upstream commit 624085a31c1ad6a80b1e53f686bf6ee92abbf6e8 ]

First problem is that optlen is fetched without checking
there is more than one byte to parse.

Fix this by taking care of IPV6_TLV_PAD1 before
fetching optlen (under appropriate sanity checks against len)

Second problem is that IPV6_TLV_PADN checks of zero
padding are performed before the check of remaining length.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Fixes: c1412fce7ecc ("net/ipv6/exthdrs.c: Strict PadN option checking")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:33 +02:00
..
6lowpan
…
9p
net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid
2020-11-05 11:43:20 +01:00
802
…
8021q
net: vlan: avoid leaks on register_vlan_dev() failures
2021-01-17 14:05:31 +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
AX.25: Prevent integer overflows in connect and sendmsg
2020-07-31 18:39:31 +02:00
batman-adv
batman-adv: Avoid WARN_ON timing related checks
2021-06-23 14:41:23 +02:00
bluetooth
Bluetooth: use correct lock to prevent UAF of hdev object
2021-06-10 13:37:09 +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
net: bridge: fix vlan tunnel dst refcnt when egressing
2021-06-23 14:41:30 +02:00
caif
net: caif: fix memory leak in cfusbl_device_notify
2021-06-10 13:37:10 +02:00
can
can: j1939: j1939_sk_init(): set SOCK_RCU_FREE to call sk_destruct() after RCU is done
2021-07-14 16:53:04 +02:00
ceph
libceph: clear con->out_msg on Policy::stateful_server faults
2020-11-05 11:43:34 +01:00
core
bpf: Do not change gso_size during bpf_skb_change_proto()
2021-07-14 16:53:32 +02:00
dcb
net: dcb: Accept RTM_GETDCB messages carrying set-like DCB commands
2021-01-23 15:57:59 +01:00
dccp
ipv6: weaken the v4mapped source check
2021-04-07 14:47:38 +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: fix error code getting shifted with 4 in dsa_slave_get_sset_count
2021-06-03 08:59:12 +02:00
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: fix null deref in parse dev addr
2021-06-18 09:58:57 +02:00
ife
net: Fix Kconfig indentation
2019-09-26 08:56:17 +02:00
ipv4
net/ipv4: swap flow ports when validating source
2021-07-14 16:53:31 +02:00
ipv6
ipv6: fix out-of-bound access in ip6_parse_tlv()
2021-07-14 16:53:33 +02:00
iucv
net/af_iucv: remove WARN_ONCE on malformed RX packets
2021-03-07 12:20:42 +01:00
kcm
kcm: disable preemption in kcm_parse_func_strparser()
2019-09-27 10:27:14 +02:00
key
af_key: relax availability checks for skb size calculation
2021-02-13 13:52:54 +01:00
l2tp
l2tp: remove skb_dst_set() from l2tp_xmit_skb()
2020-07-22 09:32:47 +02:00
l3mdev
…
lapb
net: lapb: Copy the skb before sending a packet
2021-02-10 09:25:28 +01:00
llc
net: silence data-races on sk_backlog.tail
2020-10-01 13:17:15 +02:00
mac80211
mac80211: remove iwlwifi specific workaround NDPs of null_response
2021-07-14 16:53:32 +02:00
mac802154
net: mac802154: Fix general protection fault
2021-04-14 08:24:18 +02:00
mpls
net: avoid infinite loop in mpls_gso_segment when mpls_hlen == 0
2021-03-17 17:03:31 +01:00
ncsi
net/ncsi: Avoid channel_monitor hrtimer deadlock
2021-04-14 08:24:15 +02:00
netfilter
netfilter: nft_tproxy: restrict support to TCP and UDP transport protocols
2021-07-14 16:53:30 +02:00
netlabel
netlabel: Fix memory leak in netlbl_mgmt_add_common
2021-07-14 16:53:29 +02:00
netlink
netlink: disable IRQs for netlink_lock_table()
2021-06-16 11:59:34 +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: fix a permission check bug
2021-06-16 11:59:33 +02:00
nsh
…
openvswitch
openvswitch: meter: fix race when getting now_ms.
2021-06-03 08:59:13 +02:00
packet
net/packet: annotate accesses to po->ifindex
2021-06-30 08:47:48 -04:00
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 OOB Read in qrtr_endpoint_post
2021-06-23 14:41:25 +02:00
rds
net: rds: fix memory leak in rds_recvmsg
2021-06-23 14:41:24 +02:00
rfkill
rfkill: Fix use-after-free in rfkill_resume()
2020-11-24 13:29:05 +01:00
rose
rose: Fix Null pointer dereference in rose_send_frame()
2020-12-08 10:40:23 +01:00
rxrpc
rxrpc: Fix clearance of Tx/Rx ring when releasing a call
2021-02-17 10:35:18 +01:00
sched
pkt_sched: sch_qfq: fix qfq_change_class() error path
2021-07-14 16:53:31 +02:00
sctp
sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b
2021-05-19 10:08:27 +02:00
smc
Revert "net/smc: fix a NULL pointer dereference"
2021-06-03 08:59:08 +02:00
strparser
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sunrpc
SUNRPC: Should wake up the privileged task firstly.
2021-07-14 16:53:05 +02:00
switchdev
net: switchdev: don't set port_obj_info->handled true when -EOPNOTSUPP
2021-02-07 15:35:46 +01:00
tipc
tipc: fix unique bearer names sanity check
2021-06-10 13:37:08 +02:00
tls
tls: prevent oversized sendfile() hangs by ignoring MSG_MORE
2021-07-14 16:53:31 +02:00
unix
net/af_unix: fix a data-race in unix_dgram_sendmsg / unix_release_sock
2021-06-23 14:41:26 +02:00
vmw_vsock
vsock/vmci: log once the failed queue pair allocation
2021-05-14 09:44:30 +02:00
wimax
wimax: no need to check return value of debugfs_create functions
2019-08-10 15:25:47 -07:00
wireless
cfg80211: call cfg80211_leave_ocb when switching away from OCB
2021-06-30 08:47:45 -04:00
x25
net/x25: Return the correct errno code
2021-06-18 09:59:00 +02:00
xdp
xsk: Simplify detection of empty and full rings
2021-05-22 11:38:27 +02:00
xfrm
xfrm: xfrm_state_mtu should return at least 1280 for ipv6
2021-07-14 16:53:26 +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
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socket.c
net: make get_net_ns return error if NET_NS is disabled
2021-06-23 14:41:25 +02:00
sysctl_net.c
…