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OpenCloudOS-Kernel
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Daniel Borkmann 865b71579d packet: Move reference count in packet_sock to atomic_long_t 
commit db3fadacaf0c817b222090290d06ca2a338422d0 upstream.

In some potential instances the reference count on struct packet_sock
could be saturated and cause overflows which gets the kernel a bit
confused. To prevent this, move to a 64-bit atomic reference count on
64-bit architectures to prevent the possibility of this type to overflow.

Because we can not handle saturation, using refcount_t is not possible
in this place. Maybe someday in the future if it changes it could be
used. Also, instead of using plain atomic64_t, use atomic_long_t instead.
32-bit machines tend to be memory-limited (i.e. anything that increases
a reference uses so much memory that you can't actually get to 2**32
references). 32-bit architectures also tend to have serious problems
with 64-bit atomics. Hence, atomic_long_t is the more natural solution.

Reported-by: "The UK's National Cyber Security Centre (NCSC)" <security@ncsc.gov.uk>
Co-developed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable@kernel.org
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20231201131021.19999-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2023-12-13 18:45:23 +01:00
..
6lowpan 6lowpan: Remove redundant initialisation. 2023-03-29 08:22:52 +01:00
9p 9p: v9fs_listxattr: fix %s null argument warning 2023-11-28 17:19:46 +00:00
802
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8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-08-18 12:44:56 -07:00
appletalk sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
atm sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
ax25 ax25: Kconfig: Update link for linux-ax25.org 2023-09-18 12:56:58 +01:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-08-24 10:51:39 -07:00
bluetooth Bluetooth: Fix double free in hci_conn_cleanup 2023-11-28 17:19:38 +00:00
bpf bpf: Prevent inlining of bpf_fentry_test7() 2023-08-30 08:36:17 +02:00
bpfilter net: Use umd_cleanup_helper() 2023-05-31 13:06:57 +02:00
bridge netfilter: nf_conntrack_bridge: initialize err to 0 2023-11-28 17:19:52 +00:00
caif sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
can can: isotp: isotp_sendmsg(): fix TX state detection and wait behavior 2023-10-06 12:54:33 +02:00
ceph libceph: use kernel_connect() 2023-10-09 13:35:24 +02:00
core io_uring/af_unix: disable sending io_uring over sockets 2023-12-13 18:45:20 +01:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-01 21:07:46 -07:00
dccp dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses. 2023-11-20 11:59:35 +01:00
devlink devlink: Hold devlink lock on health reporter dump get 2023-10-06 15:56:46 -07:00
dns_resolver
…
dsa net: dsa: mark parsed interface mode for legacy switch drivers 2023-08-09 13:08:09 -07:00
ethernet
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ethtool ethtool: don't propagate EOPNOTSUPP from dumps 2023-12-08 08:52:23 +01:00
handshake net/handshake: fix file ref count in handshake_nl_accept_doit() 2023-10-23 10:19:33 -07:00
hsr hsr: Prevent use after free in prp_create_tagged_frame() 2023-11-20 11:59:34 +01:00
ieee802154 sysctl-6.6-rc1 2023-08-29 17:39:15 -07:00
ife
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ipv4 tcp: do not accept ACK of bytes we never sent 2023-12-13 18:45:10 +01:00
ipv6 ipv6: fix potential NULL deref in fib6_add() 2023-12-13 18:45:03 +01:00
iucv net/iucv: Fix size of interrupt data 2023-03-16 17:34:40 -07:00
kcm kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg(). 2023-09-14 10:43:51 +02:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-08-18 12:44:56 -07:00
l2tp udp: annotate data-races around udp->encap_type 2023-11-20 11:58:56 +01:00
l3mdev
…
lapb
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llc llc: verify mac len before reading mac header 2023-11-20 11:59:34 +01:00
mac80211 wifi: mac80211: do not pass AP_VLAN vif pointer to drivers during flush 2023-12-08 08:52:21 +01:00
mac802154 Core WPAN changes: 2023-06-24 15:41:46 -07:00
mctp mctp: perform route lookups under a RCU read-side lock 2023-10-10 19:43:22 -07:00
mpls networking: Update to register_net_sysctl_sz 2023-08-15 15:26:18 -07:00
mptcp mptcp: fix setsockopt(IP_TOS) subflow locking 2023-11-28 17:20:14 +00:00
ncsi Revert ncsi: Propagate carrier gain/loss events to the NCSI controller 2023-11-28 17:20:10 +00:00
netfilter netfilter: xt_owner: Fix for unsafe access of sk->sk_socket 2023-12-13 18:45:10 +01:00
netlabel netlabel: Remove unused declaration netlbl_cipsov4_doi_free() 2023-08-02 12:28:22 -07:00
netlink drop_monitor: Require 'CAP_SYS_ADMIN' when joining "events" group 2023-12-13 18:45:10 +01:00
netrom netrom: Deny concurrent connect(). 2023-08-28 06:58:46 +01:00
nfc nfc: nci: fix possible NULL pointer dereference in send_acknowledge() 2023-10-16 17:34:53 -07:00
nsh net: move gso declarations and functions to their own files 2023-06-10 00:11:41 -07:00
openvswitch net/sched: act_ct: Always fill offloading tuple iifidx 2023-11-20 11:59:37 +01:00
packet packet: Move reference count in packet_sock to atomic_long_t 2023-12-13 18:45:23 +01:00
phonet sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
psample psample: Require 'CAP_NET_ADMIN' when joining "packets" group 2023-12-13 18:45:10 +01:00
qrtr net: qrtr: Handle IPCR control port format of older targets 2023-07-17 09:02:30 +01:00
rds net: prevent address rewrite in kernel_bind() 2023-10-01 19:31:29 +01:00
rfkill net: rfkill: reduce data->mtx scope in rfkill_fop_open 2023-10-11 16:55:10 +02:00
rose sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
rxrpc rxrpc: Defer the response to a PING ACK until we've parsed it 2023-12-03 07:33:02 +01:00
sched net: sched: do not offload flows with a helper in act_ct 2023-11-28 17:19:54 +00:00
sctp sctp: update hb timer immediately after users change hb_interval 2023-10-04 17:29:58 -07:00
smc net/smc: fix missing byte order conversion in CLC handshake 2023-12-13 18:45:11 +01:00
strparser
…
sunrpc svcrdma: Drop connection after an RDMA Read error 2023-11-28 17:20:02 +00:00
switchdev net: switchdev: Add a helper to replay objects on a bridge port 2023-07-21 08:54:03 +01:00
tipc tipc: Fix kernel-infoleak due to uninitialized TLV value 2023-11-28 17:19:51 +00:00
tls net: tls, update curr on splice as well 2023-12-13 18:45:10 +01:00
unix bpf, sockmap: af_unix stream sockets need to hold ref for pair sock 2023-12-08 08:52:23 +01:00
vmw_vsock vsock: read from socket's error queue 2023-11-28 17:19:38 +00:00
wireless Revert "wifi: cfg80211: fix CQM for non-range use" 2023-12-11 10:40:17 +01:00
x25 sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
xdp xsk: Skip polling event check for unbound socket 2023-12-13 18:45:06 +01:00
xfrm ipsec-2023-10-17 2023-10-17 18:21:13 -07:00
Kconfig bpf: Add fd-based tcx multi-prog infra with link support 2023-07-19 10:07:27 -07:00
Kconfig.debug
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Makefile net/handshake: Create a NETLINK service for handling handshake requests 2023-04-19 18:48:48 -07:00
compat.c net/compat: Update msg_control_is_user when setting a kernel pointer 2023-04-14 11:09:27 +01:00
devres.c
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socket.c net: prevent address rewrite in kernel_bind() 2023-10-01 19:31:29 +01:00
sysctl_net.c sysctl: Add size to register_net_sysctl function 2023-08-15 15:26:17 -07:00