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linux-hardened/net/core
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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
..
datagram.c udp: enable MSG_PEEK at non-zero offset 2016-04-05 16:29:37 -04:00
dev.c bpf: Fix bpf_redirect to an ipip/ip6tnl dev 2016-11-12 23:38:07 -05:00
dev_addr_lists.c
dev_ioctl.c
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.c
dst_cache.c net: dst_cache_per_cpu_dst_set() can be static 2016-03-18 17:45:08 -04:00
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.c flowcache: Increase threshold for refusing new allocations 2016-11-23 06:37:09 +01:00
flow_dissector.c flow_dissect: call init_default_flow_dissectors() earlier 2016-11-22 14:44:01 -05:00
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
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-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-traces.c
net_namespace.c net: check dead netns for peernet2id_alloc() 2016-11-17 11:19:40 -05:00
netclassid_cgroup.c
netevent.c
netpoll.c net: tracepoint napi:napi_poll add work and budget 2016-07-09 18:05:02 -04:00
netprio_cgroup.c
pktgen.c net: pktgen: remove rcu locking in pktgen_change_name() 2016-10-17 10:52:59 -04:00
ptp_classifier.c
request_sock.c
rtnetlink.c net/rtnetlink: fix attribute name in nlmsg_size() comments 2016-12-02 10:34:59 -05:00
scm.c
secure_seq.c
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.c net: avoid signed overflows for SO_{SND|RCV}BUFFORCE 2016-12-02 14:10:14 -05:00
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
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
tso.c
utils.c net: the space is required before the open parenthesis '(' 2016-06-29 05:15:14 -04:00