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Paul Moore 96cce13df9 cipso,calipso: resolve a number of problems with the DOI refcounts 
commit ad5d07f4a9cd671233ae20983848874731102c08 upstream.

The current CIPSO and CALIPSO refcounting scheme for the DOI
definitions is a bit flawed in that we:

1. Don't correctly match gets/puts in netlbl_cipsov4_list().
2. Decrement the refcount on each attempt to remove the DOI from the
   DOI list, only removing it from the list once the refcount drops
   to zero.

This patch fixes these problems by adding the missing "puts" to
netlbl_cipsov4_list() and introduces a more conventional, i.e.
not-buggy, refcounting mechanism to the DOI definitions.  Upon the
addition of a DOI to the DOI list, it is initialized with a refcount
of one, removing a DOI from the list removes it from the list and
drops the refcount by one; "gets" and "puts" behave as expected with
respect to refcounts, increasing and decreasing the DOI's refcount by
one.

Fixes: b1edeb102397 ("netlabel: Replace protocol/NetLabel linking with refrerence counts")
Fixes: d7cce01504a0 ("netlabel: Add support for removing a CALIPSO DOI.")
Reported-by: syzbot+9ec037722d2603a9f52e@syzkaller.appspotmail.com
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2021-04-12 12:52:59 +08:00
..
ila Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
netfilter netfilter: x_tables: Update remaining dereference to RCU 2021-04-12 12:51:14 +08:00
Kconfig net: ipv6: fix kconfig dependency warning for IPV6_SEG6_HMAC 2021-03-16 16:36:27 +08:00
Makefile Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
addrconf.c ipv6: set multicast flag on the multicast route 2021-04-12 12:51:40 +08:00
addrconf_core.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
addrlabel.c ipv6: addrlabel: fix possible memory leak in ip6addrlbl_net_init 2021-03-16 16:41:51 +08:00
af_inet6.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ah6.c ah6: fix error return code in ah6_input() 2021-03-16 16:41:03 +08:00
anycast.c ipv6: fix memory leaks on IPV6_ADDRFORM path 2021-03-16 16:33:08 +08:00
calipso.c cipso,calipso: resolve a number of problems with the DOI refcounts 2021-04-12 12:52:59 +08:00
datagram.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
esp6.c esp: avoid unneeded kmap_atomic call 2021-04-12 12:51:30 +08:00
esp6_offload.c esp6: get the right proto for transport mode in esp6_gso_encap 2021-03-16 16:28:40 +08:00
exthdrs.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
exthdrs_core.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
exthdrs_offload.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
fib6_notifier.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
fib6_rules.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
fou6.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
icmp.c net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending 2021-04-12 12:52:42 +08:00
inet6_connection_sock.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
inet6_hashtables.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip6_checksum.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip6_fib.c net: ipv6: fib: flush exceptions when purging route 2021-04-12 12:51:15 +08:00
ip6_flowlabel.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip6_gre.c net: ip6_gre: set dev->hard_header_len when using header_ops 2021-03-16 16:41:55 +08:00
ip6_icmp.c net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending 2021-04-12 12:52:42 +08:00
ip6_input.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip6_offload.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip6_offload.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip6_output.c net: ipv6: Validate GSO SKB before finish IPv6 processing 2021-04-12 12:51:30 +08:00
ip6_tunnel.c gre6: Fix reception with IP6_TNL_F_RCV_DSCP_COPY 2021-03-16 16:34:43 +08:00
ip6_udp_tunnel.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip6_vti.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip6mr.c net: don't return invalid table id error when we fall back to PF_UNSPEC 2021-03-16 16:28:22 +08:00
ipcomp6.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ipv6_sockglue.c ipv6: fix memory leaks on IPV6_ADDRFORM path 2021-03-16 16:33:08 +08:00
mcast.c mld: fix memory leak in ipv6_mc_destroy_dev() 2021-03-16 16:30:45 +08:00
mcast_snoop.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
mip6.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ndisc.c Exempt multicast addresses from five-second neighbor lifetime 2021-03-16 16:41:04 +08:00
netfilter.c netfilter: use actual socket sk rather than skb sk when routing harder 2021-03-16 16:40:35 +08:00
output_core.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ping.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
proc.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
protocol.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raw.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
reassembly.c IPv6: reply ICMP error if the first fragment don't include all headers 2021-04-12 12:51:42 +08:00
route.c ipv6: Fix nexthop refcnt leak when creating ipv6 route info 2021-03-16 16:33:08 +08:00
seg6.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
seg6_hmac.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
seg6_iptunnel.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
seg6_local.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
sit.c net: sit: unregister_netdevice on newlink's error path 2021-04-12 12:51:31 +08:00
syncookies.c net: Update window_clamp if SOCK_RCVBUF is set 2021-03-16 16:40:58 +08:00
sysctl_net_ipv6.c ipv6: Fix sysctl max for fib_multipath_hash_policy 2021-03-16 16:35:46 +08:00
tcp_ipv6.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcpv6_offload.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tunnel6.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udp.c udp: Improve load balancing for SO_REUSEPORT. 2021-03-16 16:32:43 +08:00
udp_impl.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udp_offload.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udplite.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm6_input.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm6_output.c xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish 2021-03-16 16:26:53 +08:00
xfrm6_policy.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm6_protocol.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm6_state.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm6_tunnel.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00