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Eric Dumazet b98b0bc8c4 net: avoid signed overflows for SO_{SND|RCV}BUFFORCE 
CAP_NET_ADMIN users should not be allowed to set negative
sk_sndbuf or sk_rcvbuf values, as it can lead to various memory
corruptions, crashes, OOM...

Note that before commit 8298193012 ("net: cleanups in
sock_setsockopt()"), the bug was even more serious, since SO_SNDBUF
and SO_RCVBUF were vulnerable.

This needs to be backported to all known linux kernels.

Again, many thanks to syzkaller team for discovering this gem.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2016-12-02 14:10:14 -05:00
..
6lowpan 6lowpan: ndisc: no overreact if no short address is available 2016-09-19 20:19:34 +02:00
9p IB/core: add support to create a unsafe global rkey to ib_create_pd 2016-09-23 13:47:44 -04:00
802
…
8021q net: add recursion limit to GRO 2016-10-20 14:32:22 -04:00
appletalk appletalk: use IS_ENABLED() instead of checking for built-in or module 2016-09-10 21:19:10 -07:00
atm lec: use IS_ENABLED() instead of checking for built-in or module 2016-09-10 21:19:10 -07:00
ax25 AX.25: Close socket connection on session completion 2016-06-18 20:55:34 -07:00
batman-adv batman-adv: Detect missing primaryif during tp_send as error 2016-11-04 12:27:39 +01:00
bluetooth Bluetooth: Fix using the correct source address type 2016-11-22 22:50:46 +01:00
bridge bridge: multicast: restore perm router ports on multicast enable 2016-10-18 13:52:13 -04:00
caif caif: Remove unneeded header file 2016-06-28 05:26:14 -04:00
can can: bcm: fix support for CAN FD frames 2016-11-23 15:22:18 +01:00
ceph libceph: initialize last_linger_id with a large integer 2016-11-10 20:13:08 +01:00
core net: avoid signed overflows for SO_{SND|RCV}BUFFORCE 2016-12-02 14:10:14 -05:00
dcb
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dccp net/dccp: fix use-after-free in dccp_invalid_packet 2016-11-29 20:37:26 -05:00
decnet net: fix decnet rtnexthop parsing 2016-07-05 14:08:47 -07:00
dns_resolver
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dsa net: dsa: slave: fix fixed-link phydev leaks 2016-11-29 23:17:02 -05:00
ethernet net: add recursion limit to GRO 2016-10-20 14:32:22 -04:00
hsr net/hsr: Remove unused but set variable 2016-10-18 10:28:18 -04:00
ieee802154 ieee802154: 6lowpan: fix intra pan id check 2016-07-08 13:23:12 +02:00
ipv4 ipv4: Set skb->protocol properly for local output 2016-12-02 12:34:22 -05:00
ipv6 ip6_offload: check segs for NULL in ipv6_gso_segment. 2016-12-02 13:34:58 -05:00
ipx
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irda Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-09-23 06:46:57 -04:00
iucv Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-07-29 17:38:46 -07:00
kcm Merge branch 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-07 15:36:58 -07:00
key
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l2tp l2tp: fix address test in __l2tp_ip6_bind_lookup() 2016-11-30 14:14:08 -05:00
l3mdev net: ipv6: Remove l3mdev_get_saddr6 2016-09-10 23:12:53 -07:00
lapb net/lapb: tuse %*ph to dump buffers 2016-05-29 22:33:25 -07:00
llc llc: switch type to bool as the timeout is only tested versus 0 2016-09-17 10:05:05 -04:00
mac80211 mac80211: fix A-MSDU aggregation with fast-xmit + txq 2016-11-15 14:37:30 +01:00
mac802154 mac802154: use rate limited warnings for malformed frames 2016-09-19 20:19:34 +02:00
mpls mpls: move mpls_hdr to a common location 2016-10-03 02:00:21 -04:00
ncsi net/ncsi: Improve HNCDSC AEN handler 2016-10-20 11:23:08 -04:00
netfilter netfilter: nft_range: add the missing NULL pointer check 2016-11-24 14:43:35 +01:00
netlabel netlabel: Implement CALIPSO config functions for SMACK. 2016-06-27 15:06:18 -04:00
netlink netlink: Call cb->done from a worker thread 2016-11-29 19:48:38 -05:00
netrom
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nfc NFC: digital: Fix RTOX supervisor PDU handling 2016-07-11 02:02:03 +02:00
openvswitch openvswitch: Fix skb leak in IPv6 reassembly. 2016-11-30 11:00:45 -05:00
packet packet: fix race condition in packet_set_ring 2016-12-02 12:16:49 -05:00
phonet
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qrtr Merge tag 'qcom-soc-for-4.7-2' into net-next 2016-05-17 14:11:19 -04:00
rds RDS: TCP: unregister_netdevice_notifier() in error path of rds_tcp_init_net 2016-12-02 13:29:26 -05:00
rfkill
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rose rose: limit sk_filter trim to payload 2016-07-13 11:53:40 -07:00
rxrpc rxrpc: Fix checking of error from ip6_route_output() 2016-10-13 08:43:17 +01:00
sched sched: cls_flower: remove from hashtable only in case skip sw flag is not set 2016-11-29 20:44:38 -05:00
sctp sctp: change sk state only when it has assocs in sctp_shutdown 2016-11-14 16:22:33 -05:00
strparser strparser: Propagate correct error code in strp_recv() 2016-10-12 01:51:49 -04:00
sunrpc One fix for an NFS/RDMA crash. 2016-11-18 16:32:21 -08:00
switchdev switchdev: Execute bridge ndos only for bridge ports 2016-10-19 10:58:04 -04:00
tipc tipc: check minimum bearer MTU 2016-12-02 14:03:20 -05:00
unix af_unix: conditionally use freezable blocking calls in read 2016-11-18 13:58:39 -05:00
vmw_vsock VSOCK: Don't dec ack backlog twice for rejected connections 2016-09-27 07:59:25 -04:00
wimax
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wireless cfg80211: limit scan results cache size 2016-11-18 08:44:44 +01:00
x25 net: x25: remove null checks on arrays calling_ae and called_ae 2016-09-09 18:13:30 -07:00
xfrm xfrm_user: fix return value from xfrm_user_rcv_msg 2016-11-30 10:58:53 +01:00
Kconfig strparser: Stream parser for messages 2016-08-17 19:36:23 -04:00
Makefile strparser: Stream parser for messages 2016-08-17 19:36:23 -04:00
compat.c packet: compat support for sock_fprog 2016-06-09 23:41:03 -07:00
socket.c xattr: Fix setting security xattrs on sockfs 2016-11-17 00:00:23 -05:00
sysctl_net.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2016-10-06 09:52:23 -07:00