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 82981930125a ("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

..

datagram.c

udp: enable MSG_PEEK at non-zero offset

2016-04-05 16:29:37 -04:00

dev_addr_lists.c

net: fix spelling for synchronized

2014-11-18 15:26:32 -05:00

dev_ioctl.c

dev_ioctl: use sizeof(x) instead of sizeof x

2014-11-18 15:27:32 -05:00

dev.c

bpf: Fix bpf_redirect to an ipip/ip6tnl dev

2016-11-12 23:38:07 -05:00

devlink.c

devlink: add hardware messages tracing facility

2016-07-12 14:20:18 -07:00

drop_monitor.c

drop_monitor: make genl_multicast_group const

2016-09-01 14:09:00 -07:00

dst_cache.c

net: dst_cache_per_cpu_dst_set() can be static

2016-03-18 17:45:08 -04:00

dst.c

net: add dst_cache to ovs vxlan lwtunnel

2016-02-16 20:21:48 -05:00

ethtool.c

net: ethtool: don't require CAP_NET_ADMIN for ETHTOOL_GLINKSETTINGS

2016-11-25 20:23:30 -05:00

fib_rules.c

fib_rules: Added NLM_F_EXCL support to fib_nl_newrule

2016-06-30 08:23:19 -04:00

filter.c

bpf: Fix bpf_redirect to an ipip/ip6tnl dev

2016-11-12 23:38:07 -05:00

flow_dissector.c

flow_dissect: call init_default_flow_dissectors() earlier

2016-11-22 14:44:01 -05:00

flow.c

flowcache: Increase threshold for refusing new allocations

2016-11-23 06:37:09 +01:00

gen_estimator.c

net: sched: do not acquire qdisc spinlock in qdisc/class stats dump

2016-06-07 16:37:14 -07:00

gen_stats.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-06-10 11:52:24 -07:00

hwbm.c

net: hwbm: Fix unbalanced spinlock in error case

2016-05-25 12:35:09 -07:00

link_watch.c

dev: introduce dev_get_iflink()

2015-04-02 14:04:59 -04:00

lwtunnel.c

net: lwtunnel: Handle fragmentation

2016-08-30 22:27:18 -07:00

Makefile

net: add a hardware buffer management helper API

2016-03-14 12:19:46 -04:00

neighbour.c

neigh: allow admin to set NUD_STALE

2016-08-08 15:36:38 -07:00

net_namespace.c

net: check dead netns for peernet2id_alloc()

2016-11-17 11:19:40 -05:00

net-procfs.c

net: remove NETDEV_TX_LOCKED support

2016-04-26 15:53:05 -04:00

net-sysfs.c

net: introduce NETDEV_CHANGE_TX_QUEUE_LEN

2016-07-01 05:32:17 -04:00

net-sysfs.h

net: netdev_kobject_init: annotate with __init

2014-01-05 20:27:54 -05:00

net-traces.c

net: IPv6 fib lookup tracepoint

2015-11-22 11:54:10 -05:00

netclassid_cgroup.c

core: remove unneded headers for net cgroup controllers.

2016-02-17 15:31:27 -05:00

netevent.c

netevent: remove automatic variable in register_netevent_notifier()

2015-05-31 00:03:21 -07:00

netpoll.c

net: tracepoint napi:napi_poll add work and budget

2016-07-09 18:05:02 -04:00

netprio_cgroup.c

core: remove unneded headers for net cgroup controllers.

2016-02-17 15:31:27 -05:00

pktgen.c

net: pktgen: remove rcu locking in pktgen_change_name()

2016-10-17 10:52:59 -04:00

ptp_classifier.c

ptp: Change ptp_class to a proper bitmask

2015-11-03 11:08:22 -05:00

request_sock.c

tcp: restore fastopen operations

2015-10-05 03:19:06 -07:00

rtnetlink.c

net/rtnetlink: fix attribute name in nlmsg_size() comments

2016-12-02 10:34:59 -05:00

scm.c

unix: correctly track in-flight fds in sending process user_struct

2016-02-08 10:30:42 -05:00

secure_seq.c

net: remove a sparse error in secure_dccpv6_sequence_number()

2015-05-25 22:55:37 -04:00

skbuff.c

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

sock_diag.c

sock_diag: align nlattr properly when needed

2016-04-26 12:00:48 -04:00

sock_reuseport.c

soreuseport: do not export reuseport_add_sock()

2016-10-18 14:18:23 -04:00

sock.c

net: avoid signed overflows for SO_{SND|RCV}BUFFORCE

2016-12-02 14:10:14 -05:00

stream.c

net: do not export sk_stream_write_space

2016-09-28 20:32:38 -04:00

sysctl_net_core.c

bpf: add generic constant blinding for use in jits

2016-05-16 13:49:32 -04:00

timestamping.c

net: skb_defer_rx_timestamp should check for phydev before setting up classify

2015-07-09 14:17:15 -07:00

tso.c

net: tso: add support for IPv6

2015-10-26 22:24:22 -07:00

utils.c

net: the space is required before the open parenthesis '('

2016-06-29 05:15:14 -04:00