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5648451e30
kernel_optimize_test/net
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Gustavo A. R. Silva 5648451e30 ipv4: Fix potential Spectre v1 vulnerability 
vr.vifi is indirectly controlled by user-space, hence leading to
a potential exploitation of the Spectre variant 1 vulnerability.

This issue was detected with the help of Smatch:

net/ipv4/ipmr.c:1616 ipmr_ioctl() warn: potential spectre issue 'mrt->vif_table' [r] (local cap)
net/ipv4/ipmr.c:1690 ipmr_compat_ioctl() warn: potential spectre issue 'mrt->vif_table' [r] (local cap)

Fix this by sanitizing vr.vifi before using it to index mrt->vif_table'

Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].

[1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-10 12:10:38 -08:00
..
6lowpan
9p Merge branch 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-11-03 10:35:52 -07:00
802
8021q netpoll: allow cleanup to be synchronous 2018-10-19 17:01:43 -07:00
appletalk
atm Revert "net: simplify sock_poll_wait" 2018-10-23 10:57:06 -07:00
ax25
batman-adv batman-adv: Expand merged fragment buffer for full packet 2018-11-12 10:41:29 +01:00
bluetooth Merge branch 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-11-01 19:58:52 -07:00
bpf bpf: refactor bpf_test_run() to separate own failures and test program result 2018-12-01 12:33:58 -08:00
bpfilter net: bpfilter: Set user mode helper's command line 2018-10-22 19:37:36 -07:00
bridge net: bridge: fix vlan stats use-after-free on destruction 2018-11-17 21:38:44 -08:00
caif Revert "net: simplify sock_poll_wait" 2018-10-23 10:57:06 -07:00
can can: raw: check for CAN FD capable netdev in raw_sendmsg() 2018-11-09 17:19:34 +01:00
ceph libceph: fall back to sendmsg for slab pages 2018-11-19 17:59:47 +01:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2018-12-05 16:30:30 -08:00
dcb
dccp Revert "net: simplify sock_poll_wait" 2018-10-23 10:57:06 -07:00
decnet
dns_resolver dns: Allow the dns resolver to retrieve a server set 2018-10-04 09:40:52 -07:00
dsa net: dsa: Fix tagging attribute location 2018-11-30 17:17:39 -08:00
ethernet
hsr
ieee802154
ife
ipv4 ipv4: Fix potential Spectre v1 vulnerability 2018-12-10 12:10:38 -08:00
ipv6 ipv6: Check available headroom in ip6_xmit() even without options 2018-12-07 16:24:40 -08:00
iucv Revert "net: simplify sock_poll_wait" 2018-10-23 10:57:06 -07:00
kcm
key
l2tp l2tp: fix a sock refcnt leak in l2tp_tunnel_register 2018-11-14 22:49:31 -08:00
l3mdev
lapb
llc llc: do not use sk_eat_skb() 2018-10-22 19:59:20 -07:00
mac80211 mac80211: ignore NullFunc frames in the duplicate detection 2018-12-05 12:34:49 +01:00
mac802154 mac802154: Remove VLA usage of skcipher 2018-09-28 12:46:07 +08:00
mpls net/mpls: Handle kernel side filtering of route dumps 2018-10-16 00:14:07 -07:00
ncsi net/ncsi: Add NCSI Broadcom OEM command 2018-10-17 22:14:54 -07:00
netfilter netfilter: nf_tables: deactivate expressions in rule replecement routine 2018-11-28 10:56:40 +01:00
netlabel
netlink netlink: Add answer_flags to netlink_callback 2018-10-16 00:13:12 -07:00
netrom
nfc Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
nsh
openvswitch openvswitch: fix spelling mistake "execeeds" -> "exceeds" 2018-11-30 13:18:09 -08:00
packet packet: copy user buffers before orphan or clone 2018-11-23 11:08:03 -08:00
phonet
psample
qrtr
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-12 21:38:46 -07:00
rfkill
rose
rxrpc rxrpc: Fix life check 2018-11-15 11:35:40 -08:00
sched net/sched: cls_flower: Reject duplicated rules also under skip_sw 2018-12-09 11:55:08 -08:00
sctp sctp: initialize sin6_flowinfo for ipv6 addrs in sctp_inet6addr_event 2018-12-10 11:53:42 -08:00
smc net/smc: use after free fix in smc_wr_tx_put_slot() 2018-11-21 16:14:56 -08:00
strparser bpf, sockmap: convert to generic sk_msg interface 2018-10-15 12:23:19 -07:00
sunrpc SUNRPC: Don't force a redundant disconnection in xs_read_stream() 2018-12-05 07:11:12 -05:00
switchdev
tipc tipc: fix lockdep warning during node delete 2018-11-27 16:30:39 -08:00
tls Merge branch 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-11-01 19:58:52 -07:00
unix Revert "net: simplify sock_poll_wait" 2018-10-23 10:57:06 -07:00
vmw_vsock
wimax
wireless cfg80211: Fix busy loop regression in ieee80211_ie_split_ric() 2018-12-05 12:51:29 +01:00
x25 net/x25: handle call collisions 2018-11-29 14:25:36 -08:00
xdp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-19 11:03:06 -07:00
xfrm Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-11-03 18:25:17 -07:00
compat.c
Kconfig bpf, sockmap: convert to generic sk_msg interface 2018-10-15 12:23:19 -07:00
Makefile
socket.c socket: do a generic_file_splice_read when proto_ops has no splice_read 2018-11-17 21:34:11 -08:00
sysctl_net.c