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Willem de Bruijn 9117c897c9 packet: round up linear to header len 
[ Upstream commit 57031eb794906eea4e1c7b31dc1e2429c0af0c66 ]

Link layer protocols may unconditionally pull headers, as Ethernet
does in eth_type_trans. Ensure that the entire link layer header
always lies in the skb linear segment. tpacket_snd has such a check.
Extend this to packet_snd.

Variable length link layer headers complicate the computation
somewhat. Here skb->len may be smaller than dev->hard_header_len.

Round up the linear length to be at least as long as the smallest of
the two.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-18 16:39:27 +01:00
..
6lowpan 6lowpan: put mcast compression in an own function 2015-10-21 00:49:25 +02:00
9p IB/cma: Add support for network namespaces 2015-10-28 12:32:48 -04:00
802
8021q net: add recursion limit to GRO 2016-11-15 07:46:38 +01:00
appletalk
atm atm: deal with setting entry before mkip was called 2015-09-17 22:13:32 -07:00
ax25 ax25: Fix segfault after sock connection timeout 2017-02-04 09:45:09 +01:00
batman-adv batman-adv: Check for alloc errors when preparing TT local data 2016-12-15 08:49:23 -08:00
bluetooth Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU 2016-08-20 18:09:19 +02:00
bridge bridge: netlink: call br_changelink() during br_dev_newlink() 2017-02-04 09:45:09 +01:00
caif net: caif: fix misleading indentation 2016-09-30 10:18:35 +02:00
can can: Fix kernel panic at security_sock_rcv_skb 2017-02-18 16:39:26 +01:00
ceph libceph: verify authorize reply on connect 2017-01-09 08:07:52 +01:00
core net: use a work queue to defer net_disable_timestamp() work 2017-02-18 16:39:26 +01:00
dcb net/dcb: make dcbnl.c explicitly non-modular 2015-10-09 07:52:27 -07:00
dccp net/dccp: fix use-after-free in dccp_invalid_packet 2016-12-10 19:07:24 +01:00
decnet decnet: Do not build routes to devices without decnet private data. 2016-05-18 17:06:35 -07:00
dns_resolver net: dns_resolver: convert time_t to time64_t 2015-11-18 16:27:46 -05:00
dsa net: dsa: Bring back device detaching in dsa_slave_suspend() 2017-02-04 09:45:10 +01:00
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 net: fix percpu memory leaks 2015-11-02 22:47:14 -05:00
ipv4 tcp: avoid infinite loop in tcp_splice_read() 2017-02-18 16:39:27 +01:00
ipv6 sit: fix a double free on error path 2017-02-18 16:39:27 +01:00
ipx
irda net/irda: handle iriap_register_lsap() allocation failure 2016-09-30 10:18:36 +02:00
iucv af_iucv: Validate socket address length in iucv_sock_bind() 2016-03-03 15:07:03 -08:00
key af_key: fix two typos 2015-10-23 03:05:19 -07:00
l2tp l2tp: fix racy SOCK_ZAPPED flag check in l2tp_ip{,6}_bind() 2016-12-10 19:07:23 +01:00
l3mdev net: Add netif_is_l3_slave 2015-10-07 04:27:43 -07:00
lapb
llc net: fix infoleak in llc 2016-05-18 17:06:40 -07:00
mac80211 mac80211: Fix adding of mesh vendor IEs 2017-02-14 15:22:51 -08:00
mac802154 mac802154: llsec: use kzfree 2015-10-21 00:49:24 +02:00
mpls mpls: find_outdev: check for err ptr in addition to NULL check 2016-04-20 15:42:07 +09:00
netfilter netfilter: nft_dynset: fix element timeout for HZ != 1000 2016-11-26 09:54:54 +01:00
netlabel netlabel: add address family checks to netlbl_{sock,req}_delattr() 2016-08-20 18:09:22 +02:00
netlink netlink: Do not schedule work from sk_destruct 2016-12-10 19:07:23 +01:00
netrom
nfc net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA 2015-12-01 15:45:05 -05:00
openvswitch openvswitch: maintain correct checksum state in conntrack actions 2017-02-04 09:45:09 +01:00
packet packet: round up linear to header len 2017-02-18 16:39:27 +01:00
phonet phonet: properly unshare skbs in phonet_rcv() 2016-01-31 11:29:00 -08:00
rds rds: fix an infoleak in rds_inc_info_copy 2016-09-15 08:27:51 +02:00
rfkill rfkill: fix rfkill_fop_read wait_event usage 2016-03-03 15:07:26 -08:00
rose
rxrpc net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA 2015-12-01 15:45:05 -05:00
sched net, sched: fix soft lockup in tc_classify 2017-01-15 13:41:34 +01:00
sctp sctp: avoid BUG_ON on sctp_wait_for_sndbuf 2017-02-18 16:39:27 +01:00
sunrpc svcrpc: fix oops in absence of krb5 module 2017-02-09 08:02:45 +01:00
switchdev switchdev: pass pointer to fib_info instead of copy 2016-06-24 10:18:16 -07:00
tipc tipc: fix NULL pointer dereference in shutdown() 2016-09-30 10:18:36 +02:00
unix af_unix: move unix_mknod() out of bindlock 2017-02-04 09:45:09 +01:00
vmw_vsock VSOCK: do not disconnect socket when peer has shutdown SEND only 2016-05-18 17:06:41 -07:00
wimax
wireless nl80211: fix sched scan netlink socket owner destruction 2017-01-19 20:17:20 +01:00
x25 net: fix a kernel infoleak in x25 module 2016-05-18 17:06:43 -07:00
xfrm xfrm: Fix crash observed during device unregistration and decryption 2016-04-20 15:42:05 +09:00
compat.c
Kconfig net: Introduce L3 Master device abstraction 2015-09-29 20:40:32 -07:00
Makefile net: Introduce L3 Master device abstraction 2015-09-29 20:40:32 -07:00
socket.c sock: fix sendmmsg for partial sendmsg 2016-11-21 10:06:40 +01:00
sysctl_net.c net: Use ns_capable_noaudit() when determining net sysctl permissions 2016-09-15 08:27:50 +02:00