linux_dsm_epyc7002/net
Or Cohen acf69c9462 net/packet: fix overflow in tpacket_rcv
Using tp_reserve to calculate netoff can overflow as
tp_reserve is unsigned int and netoff is unsigned short.

This may lead to macoff receving a smaller value then
sizeof(struct virtio_net_hdr), and if po->has_vnet_hdr
is set, an out-of-bounds write will occur when
calling virtio_net_hdr_from_skb.

The bug is fixed by converting netoff to unsigned int
and checking if it exceeds USHRT_MAX.

This addresses CVE-2020-14386

Fixes: 8913336a7e ("packet: add PACKET_RESERVE sockopt")
Signed-off-by: Or Cohen <orcohen@paloaltonetworks.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-09-04 11:56:02 -07:00
..
6lowpan
9p treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
802
8021q treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
appletalk
atm treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ax25
batman-adv batman-adv: bla: use netif_rx_ni when not in interrupt context 2020-08-18 19:40:03 +02:00
bluetooth mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
bpf treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
bpfilter Merge branch 'exec-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-08-04 14:27:25 -07:00
bridge netfilter: ebtables: reject bogus getopt len value 2020-08-14 11:59:08 +02:00
caif net: caif: fix error code handling 2020-08-25 07:50:25 -07:00
can treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ceph treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
dcb
dccp treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
decnet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dns_resolver
dsa treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ethernet
ethtool ethtool: Don't omit the netlink reply if no features were changed 2020-08-18 16:00:24 -07:00
hsr
ieee802154 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ife
ipv4 netfilter: delete repeated words 2020-08-28 20:11:38 +02:00
ipv6 ipv6: Fix sysctl max for fib_multipath_hash_policy 2020-09-02 15:44:53 -07:00
iucv treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
kcm
key
l2tp
l3mdev net: Fix some comments 2020-08-27 07:55:59 -07:00
lapb
llc
mac80211 mac80211: reduce packet loss event false positives 2020-08-27 10:53:20 +02:00
mac802154 mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
mpls treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mptcp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
ncsi treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
netlabel netlabel: fix problems with mapping removal 2020-08-24 16:08:00 -07:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
netrom treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
nfc net/nfc/rawsock.c: add CAP_NET_RAW check. 2020-08-11 10:34:30 -07:00
nsh
openvswitch treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
packet net/packet: fix overflow in tpacket_rcv 2020-09-04 11:56:02 -07:00
phonet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
psample
qrtr net: qrtr: fix usage of idr in port assignment to socket 2020-08-17 15:00:41 -07:00
rds treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rfkill
rose treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
strparser
sunrpc Fixes: 2020-08-25 18:01:36 -07:00
switchdev
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
tls net/tls: Fix kmap usage 2020-08-11 10:20:34 -07:00
unix treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
vmw_vsock vsock: fix potential null pointer dereference in vsock_poll() 2020-08-12 12:56:06 -07:00
wimax
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
x25 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
xdp
xfrm treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
compat.c net/scm: Fix typo in SCM_RIGHTS compat refactoring 2020-08-07 12:43:25 -07:00
devres.c
Kconfig
Makefile
socket.c net: Fix some comments 2020-08-27 07:55:59 -07:00
sysctl_net.c