John Fastabend 6d7c51075f bpf: skmsg, fix potential psock NULL pointer dereference ... commit 8163999db4 upstream. Report from Dan Carpenter, net/core/skmsg.c:792 sk_psock_write_space() error: we previously assumed 'psock' could be null (see line 790) net/core/skmsg.c 789 psock = sk_psock(sk); 790 if (likely(psock && sk_psock_test_state(psock, SK_PSOCK_TX_ENABLED))) Check for NULL 791 schedule_work(&psock->work); 792 write_space = psock->saved_write_space; ^^^^^^^^^^^^^^^^^^^^^^^^ 793 rcu_read_unlock(); 794 write_space(sk); Ensure psock dereference on line 792 only occurs if psock is not null. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Fixes: 604326b41a ("bpf, sockmap: convert to generic sk_msg interface") Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-01-17 19:48:40 +01:00
..
Makefile	bpf: Introduce bpf sk local storage	2019-04-27 09:07:04 -07:00
bpf_sk_storage.c	bpf: support cloning sk storage on accept()	2019-08-17 23:18:54 +02:00
datagram.c	net: add READ_ONCE() annotation in __skb_wait_for_more_packets()	2019-10-28 13:33:41 -07:00
datagram.h	net/core: Allow the compiler to verify declaration and definition consistency	2019-03-27 13:49:44 -07:00
dev.c	net/sched: annotate lockless accesses to qdisc->empty	2020-01-09 10:20:02 +01:00
dev_addr_lists.c	net: remove unnecessary variables and callback	2019-10-24 14:53:49 -07:00
dev_ioctl.c	net/core: Document all dev_ioctl() arguments	2019-03-27 13:49:43 -07:00
devlink.c	devlink: Add method for time-stamp on reporter's dump	2019-11-11 16:04:21 -08:00
drop_monitor.c	drop_monitor: Better sanitize notified packets	2019-09-16 21:39:27 +02:00
dst.c	net: print proper warning on dst underflow	2019-09-26 09:05:56 +02:00
dst_cache.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
ethtool.c	net: Zeroing the structure ethtool_wolinfo in ethtool_get_wol()	2019-10-26 11:20:10 -07:00
failover.c	failover: allow name change on IFF_UP slave interfaces	2019-04-10 22:12:26 -07:00
fib_notifier.c	net: fib_notifier: move fib_notifier_ops from struct net into per-net struct	2019-09-07 17:28:22 +02:00
fib_rules.c	SPDX update for 5.2-rc4	2019-06-08 12:52:42 -07:00
filter.c	bpf: Clear skb->tstamp in bpf_redirect when necessary	2020-01-12 12:21:31 +01:00
flow_dissector.c	cls_flower: Fix the behavior using port ranges with hw-offload	2019-12-18 16:08:49 +01:00
flow_offload.c	net: core: rename indirect block ingress cb function	2019-12-18 16:08:47 +01:00
gen_estimator.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
gen_stats.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
gro_cells.c	gro_cells: make sure device is up in gro_cells_receive()	2019-03-10 11:07:14 -07:00
hwbm.c	net: hwbm: Make the hwbm_pool lock a mutex	2019-06-09 19:40:10 -07:00
link_watch.c	net: link_watch: prevent starvation when processing linkwatch wq	2019-07-01 19:02:47 -07:00
lwt_bpf.c	net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup	2019-12-18 16:08:42 +01:00
lwtunnel.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
neighbour.c	net: add annotations on hh->hh_len lockless accesses	2020-01-09 10:20:06 +01:00
net-procfs.c	treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively	2019-04-09 14:19:06 +02:00
net-sysfs.c	net-sysfs: Call dev_hold always in rx_queue_add_kobject	2019-12-31 16:41:28 +01:00
net-sysfs.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
net-traces.c	page_pool: add tracepoints for page_pool with details need by XDP	2019-06-19 11:23:13 -04:00
net_namespace.c	netns: fix GFP flags in rtnl_net_notifyid()	2019-10-25 20:14:42 -07:00
netclassid_cgroup.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
netevent.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
netpoll.c	net: fix skb use after free in netpoll	2019-08-27 20:52:02 -07:00
netprio_cgroup.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
page_pool.c	page_pool: do not release pool until inflight == 0.	2019-12-18 16:09:07 +01:00
pktgen.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next	2019-09-18 12:34:53 -07:00
ptp_classifier.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
request_sock.c	tcp: add rcu protection around tp->fastopen_rsk	2019-10-13 10:13:08 -07:00
rtnetlink.c	net: rtnetlink: prevent underflows in do_setvfinfo()	2019-11-22 09:28:46 -08:00
scm.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
secure_seq.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
skbuff.c	net: Fixed updating of ethertype in skb_mpls_push()	2019-12-18 16:08:56 +01:00
skmsg.c	bpf: skmsg, fix potential psock NULL pointer dereference	2020-01-17 19:48:40 +01:00
sock.c	net: annotate lockless accesses to sk->sk_pacing_shift	2020-01-09 10:20:07 +01:00
sock_diag.c	sock: make cookie generation global instead of per netns	2019-08-09 13:14:46 -07:00
sock_map.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-09-15 14:17:27 +02:00
sock_reuseport.c	udp: correct reuseport selection with connected sockets	2019-09-16 09:02:18 +02:00
stream.c	tcp: make sure EPOLLOUT wont be missed	2019-08-19 13:07:43 -07:00
sysctl_net_core.c	net, sysctl: Fix compiler warning when only cBPF is present	2020-01-09 10:20:03 +01:00
timestamping.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61	2019-05-24 17:36:45 +02:00
tso.c	net: Use skb accessors in network core	2019-07-22 20:47:56 -07:00
utils.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
xdp.c	xdp: obtain the mem_id mutex before trying to remove an entry.	2019-12-18 16:09:10 +01:00