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Willem de Bruijn 471a110cd2 ip: on queued skb use skb_header_pointer instead of pskb_may_pull 
[ Upstream commit 4a06fa67c4da20148803525151845276cdb995c1 ]

Commit 2efd4fca703a ("ip: in cmsg IP(V6)_ORIGDSTADDR call
pskb_may_pull") avoided a read beyond the end of the skb linear
segment by calling pskb_may_pull.

That function can trigger a BUG_ON in pskb_expand_head if the skb is
shared, which it is when when peeking. It can also return ENOMEM.

Avoid both by switching to safer skb_header_pointer.

Fixes: 2efd4fca703a ("ip: in cmsg IP(V6)_ORIGDSTADDR call pskb_may_pull")
Reported-by: syzbot <syzkaller@googlegroups.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-26 09:42:49 +01:00
..
6lowpan
6lowpan: iphc: reset mac_header after decompress to fix panic
2018-10-10 08:52:04 +02:00
9p
9p/net: put a lower bound on msize
2019-01-13 10:05:33 +01:00
802
…
8021q
vlan: also check phy_driver ts_info for vlan's real device
2018-04-13 19:50:25 +02:00
appletalk
…
atm
net: atm: Fix potential Spectre v1
2018-05-16 10:06:51 +02:00
ax25
ax25: fix a use-after-free in ax25_fillin_cb()
2019-01-13 10:05:27 +01:00
batman-adv
batman-adv: Expand merged fragment buffer for full packet
2018-12-13 09:21:34 +01:00
bluetooth
Bluetooth: SMP: fix crash in unpairing
2018-11-10 07:41:33 -08:00
bridge
net: bridge: fix a bug on using a neighbour cache entry without checking its state
2019-01-26 09:42:49 +01:00
caif
net: caif: Add a missing rcu_read_unlock() in caif_flow_cb
2018-09-05 09:18:34 +02:00
can
can: gw: ensure DLC boundaries after CAN frame modification
2019-01-26 09:42:45 +01:00
ceph
mm: replace get_user_pages_unlocked() write/force parameters with gup_flags
2018-12-17 21:55:16 +01:00
core
sock: Make sock->sk_stamp thread-safe
2019-01-13 10:05:28 +01:00
dcb
net: dcb: For wild-card lookups, use priority -1, not 0
2018-09-19 22:48:58 +02:00
dccp
dccp: fix undefined behavior with 'cwnd' shift in ccid2_cwnd_restart()
2018-08-22 07:48:35 +02:00
decnet
dn_getsockoptdecnet: move nf_{get/set}sockopt outside sock lock
2018-02-25 11:03:38 +01:00
dns_resolver
KEYS: DNS: fix parsing multiple options
2018-07-22 14:25:54 +02:00
dsa
net: dsa: Do not suspend/resume closed slave_dev
2018-08-06 16:24:41 +02:00
ethernet
net: introduce device min_header_len
2017-02-18 16:39:27 +01:00
hsr
net/hsr: fix a warning message
2015-11-23 14:56:15 -05:00
ieee802154
ieee802154: lowpan_header_create check must check daddr
2019-01-13 10:05:27 +01:00
ipv4
ip: on queued skb use skb_header_pointer instead of pskb_may_pull
2019-01-26 09:42:49 +01:00
ipv6
ip: on queued skb use skb_header_pointer instead of pskb_may_pull
2019-01-26 09:42:49 +01:00
ipx
ipx: call ipxitf_put() in ioctl error path
2017-05-25 14:30:13 +02:00
irda
irda: Only insert new objects into the global database via setsockopt
2018-09-15 09:40:40 +02:00
iucv
af_iucv: Move sockaddr length checks to before accessing sa_family in bind and connect handlers
2018-11-10 07:41:35 -08:00
key
af_key: Always verify length of provided sadb_key
2018-06-16 09:54:25 +02:00
l2tp
l2tp: hold tunnel socket when handling control frames in l2tp_ip and l2tp_ip6
2018-11-10 07:41:43 -08:00
l3mdev
net: Add netif_is_l3_slave
2015-10-07 04:27:43 -07:00
lapb
…
llc
llc: do not use sk_eat_skb()
2018-12-01 09:46:34 +01:00
mac80211
mac80211: Fix condition validating WMM IE
2018-12-21 14:09:51 +01:00
mac802154
net: mac802154: tx: expand tailroom if necessary
2018-09-09 20:04:32 +02:00
mpls
mpls, nospec: Sanitize array index in mpls_label_ok()
2018-03-11 16:19:47 +01:00
netfilter
netfilter: nf_tables: fix oops when inserting an element into a verdict map
2018-12-01 09:46:40 +01:00
netlabel
netlabel: check for IPV4MASK in addrinfo_get
2018-10-20 09:52:36 +02:00
netlink
netlink: Don't shift on 64 for ngroups
2018-08-09 12:19:28 +02:00
netrom
netrom: fix locking in nr_find_socket()
2019-01-13 10:05:28 +01:00
nfc
NFC: Fix possible memory corruption when handling SHDLC I-Frame commands
2018-09-29 03:08:51 -07:00
openvswitch
openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found
2018-05-26 08:48:47 +02:00
packet
packet: Do not leak dev refcounts on error exit
2019-01-26 09:42:49 +01:00
phonet
phonet: properly unshare skbs in phonet_rcv()
2016-01-31 11:29:00 -08:00
rds
rds: avoid unenecessary cong_update in loop transport
2018-07-22 14:25:54 +02:00
rfkill
rfkill: gpio: fix memory leak in probe error path
2018-05-16 10:06:51 +02:00
rose
…
rxrpc
rxrpc: check return value of skb_to_sgvec always
2018-04-13 19:50:23 +02:00
sched
net: Prevent invalid access to skb->prev in __qdisc_drop_all
2018-12-17 21:55:09 +01:00
sctp
sctp: initialize sin6_flowinfo for ipv6 addrs in sctp_inet6addr_event
2019-01-13 10:05:28 +01:00
sunrpc
sunrpc: use-after-free in svc_process_common()
2019-01-16 22:16:12 +01:00
switchdev
switchdev: pass pointer to fib_info instead of copy
2016-06-24 10:18:16 -07:00
tipc
tipc: add policy for TIPC_NLA_NET_ADDR
2018-04-29 07:50:06 +02:00
unix
net: drop write-only stack variable
2018-11-10 07:41:34 -08:00
vmw_vsock
VSOCK: Send reset control packet when socket is partially bound
2019-01-13 10:05:28 +01:00
wimax
net:wimax: Fix doucble word "the the" in networking.xml
2015-08-09 22:43:52 -07:00
wireless
cfg80211: reg: Init wiphy_idx in regulatory_hint_core()
2018-11-10 07:41:33 -08:00
x25
net: x25: fix one potential use-after-free issue
2018-04-13 19:50:07 +02:00
xfrm
xfrm: Fix bucket count reported to userspace
2019-01-13 10:05:31 +01:00
compat.c
sock: Make sock->sk_stamp thread-safe
2019-01-13 10:05:28 +01:00
Kconfig
Make DST_CACHE a silent config option
2018-02-25 11:03:37 +01:00
Makefile
net: Introduce L3 Master device abstraction
2015-09-29 20:40:32 -07:00
socket.c
net: socket: fix a missing-check bug
2018-11-10 07:41:41 -08:00
sysctl_net.c
net: Use ns_capable_noaudit() when determining net sysctl permissions
2016-09-15 08:27:50 +02:00