Eric Dumazet 687c5d52fe ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim() ... [ Upstream commit d375b98e02 ] syzbot pointed out [1] that NEXTHDR_FRAGMENT handling is broken. Reading frag_off can only be done if we pulled enough bytes to skb->head. Currently we might access garbage. [1] BUG: KMSAN: uninit-value in ip6_tnl_parse_tlv_enc_lim+0x94f/0xbb0 ip6_tnl_parse_tlv_enc_lim+0x94f/0xbb0 ipxip6_tnl_xmit net/ipv6/ip6_tunnel.c:1326 [inline] ip6_tnl_start_xmit+0xab2/0x1a70 net/ipv6/ip6_tunnel.c:1432 __netdev_start_xmit include/linux/netdevice.h:4940 [inline] netdev_start_xmit include/linux/netdevice.h:4954 [inline] xmit_one net/core/dev.c:3548 [inline] dev_hard_start_xmit+0x247/0xa10 net/core/dev.c:3564 __dev_queue_xmit+0x33b8/0x5130 net/core/dev.c:4349 dev_queue_xmit include/linux/netdevice.h:3134 [inline] neigh_connected_output+0x569/0x660 net/core/neighbour.c:1592 neigh_output include/net/neighbour.h:542 [inline] ip6_finish_output2+0x23a9/0x2b30 net/ipv6/ip6_output.c:137 ip6_finish_output+0x855/0x12b0 net/ipv6/ip6_output.c:222 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip6_output+0x323/0x610 net/ipv6/ip6_output.c:243 dst_output include/net/dst.h:451 [inline] ip6_local_out+0xe9/0x140 net/ipv6/output_core.c:155 ip6_send_skb net/ipv6/ip6_output.c:1952 [inline] ip6_push_pending_frames+0x1f9/0x560 net/ipv6/ip6_output.c:1972 rawv6_push_pending_frames+0xbe8/0xdf0 net/ipv6/raw.c:582 rawv6_sendmsg+0x2b66/0x2e70 net/ipv6/raw.c:920 inet_sendmsg+0x105/0x190 net/ipv4/af_inet.c:847 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2674 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc_node_track_caller+0x118/0x3c0 mm/slab_common.c:1027 kmalloc_reserve+0x249/0x4a0 net/core/skbuff.c:582 pskb_expand_head+0x226/0x1a00 net/core/skbuff.c:2098 __pskb_pull_tail+0x13b/0x2310 net/core/skbuff.c:2655 pskb_may_pull_reason include/linux/skbuff.h:2673 [inline] pskb_may_pull include/linux/skbuff.h:2681 [inline] ip6_tnl_parse_tlv_enc_lim+0x901/0xbb0 net/ipv6/ip6_tunnel.c:408 ipxip6_tnl_xmit net/ipv6/ip6_tunnel.c:1326 [inline] ip6_tnl_start_xmit+0xab2/0x1a70 net/ipv6/ip6_tunnel.c:1432 __netdev_start_xmit include/linux/netdevice.h:4940 [inline] netdev_start_xmit include/linux/netdevice.h:4954 [inline] xmit_one net/core/dev.c:3548 [inline] dev_hard_start_xmit+0x247/0xa10 net/core/dev.c:3564 __dev_queue_xmit+0x33b8/0x5130 net/core/dev.c:4349 dev_queue_xmit include/linux/netdevice.h:3134 [inline] neigh_connected_output+0x569/0x660 net/core/neighbour.c:1592 neigh_output include/net/neighbour.h:542 [inline] ip6_finish_output2+0x23a9/0x2b30 net/ipv6/ip6_output.c:137 ip6_finish_output+0x855/0x12b0 net/ipv6/ip6_output.c:222 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip6_output+0x323/0x610 net/ipv6/ip6_output.c:243 dst_output include/net/dst.h:451 [inline] ip6_local_out+0xe9/0x140 net/ipv6/output_core.c:155 ip6_send_skb net/ipv6/ip6_output.c:1952 [inline] ip6_push_pending_frames+0x1f9/0x560 net/ipv6/ip6_output.c:1972 rawv6_push_pending_frames+0xbe8/0xdf0 net/ipv6/raw.c:582 rawv6_sendmsg+0x2b66/0x2e70 net/ipv6/raw.c:920 inet_sendmsg+0x105/0x190 net/ipv4/af_inet.c:847 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2674 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b CPU: 0 PID: 7345 Comm: syz-executor.3 Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Fixes: fbfa743a9d ("ipv6: fix ip6_tnl_parse_tlv_enc_lim()") Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Willem de Bruijn <willemb@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-01-25 15:35:30 -08:00
..
6lowpan
9p	net: 9p: avoid freeing uninit memory in p9pdu_vreadf	2024-01-01 12:42:41 +00:00
802
8021q	net: check vlan filter feature in vlan_vids_add_by_dev() and vlan_vids_del_by_dev()	2024-01-01 12:42:32 +00:00
appletalk	appletalk: Fix Use-After-Free in atalk_ioctl	2023-12-20 17:01:50 +01:00
atm	atm: Fix Use-After-Free in do_vcc_ioctl	2023-12-20 17:01:48 +01:00
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 bogus check for re-auth no supported with non-ssp	2024-01-25 15:35:29 -08:00
bpf	bpf: Prevent inlining of bpf_fentry_test7()	2023-08-30 08:36:17 +02:00
bpfilter
bridge	netfilter: nf_conntrack_bridge: initialize err to 0	2023-11-28 17:19:52 +00:00
caif
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	neighbour: Don't let neigh_forced_gc() disable preemption for long	2024-01-20 11:51:43 +01:00
dcb
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	keys, dns: Fix missing size check of V1 server-list header	2024-01-10 17:16:45 +01:00
dsa
ethernet
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	net: sched: ife: fix potential use-after-free	2024-01-01 12:42:30 +00:00
ipv4	sctp: support MSG_ERRQUEUE flag in recvmsg()	2024-01-25 15:35:30 -08:00
ipv6	ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim()	2024-01-25 15:35:30 -08:00
iucv
kcm	kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg().	2023-09-14 10:43:51 +02:00
key
l2tp	udp: annotate data-races around udp->encap_type	2023-11-20 11:58:56 +01:00
l3mdev
lapb
llc	llc: verify mac len before reading mac header	2023-11-20 11:59:34 +01:00
mac80211	wifi: mac80211: handle 320 MHz in ieee80211_ht_cap_ie_to_sta_ht_cap	2024-01-20 11:51:37 +01:00
mac802154
mctp	mctp: perform route lookups under a RCU read-side lock	2023-10-10 19:43:22 -07:00
mpls
mptcp	mptcp: fix uninit-value in mptcp_incoming_options	2024-01-20 11:51:37 +01:00
ncsi	net/ncsi: Fix netlink major/minor version numbers	2024-01-25 15:35:20 -08:00
netfilter	netfilter: nf_tables: validate chain type update if available	2024-01-25 15:35:29 -08:00
netlabel	calipso: fix memory leak in netlbl_calipso_add_pass()	2024-01-25 15:35:14 -08:00
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: Do not send datagram if socket state isn't LLCP_BOUND	2024-01-20 11:51:46 +01:00
nsh
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
psample	psample: Require 'CAP_NET_ADMIN' when joining "packets" group	2023-12-13 18:45:10 +01:00
qrtr	net: qrtr: ns: Return 0 if server port is not present	2024-01-20 11:51:47 +01:00
rds	net: prevent address rewrite in kernel_bind()	2023-10-01 19:31:29 +01:00
rfkill	net: rfkill: gpio: set GPIO direction	2024-01-01 12:42:41 +00:00
rose	net/rose: fix races in rose_kill_by_device()	2024-01-01 12:42:31 +00:00
rxrpc	rxrpc: Fix skbuff cleanup of call's recvmsg_queue and rx_oos_queue	2024-01-25 15:35:30 -08:00
sched	net/sched: act_ct: fix skb leak and crash on ooo frags	2024-01-25 15:35:30 -08:00
sctp	sctp: fix busy polling	2024-01-25 15:35:30 -08:00
smc	net/smc: fix invalid link access in dumping SMC-R connections	2024-01-10 17:16:52 +01:00
strparser
sunrpc	SUNRPC: fix _xprt_switch_find_current_entry logic	2024-01-25 15:35:18 -08:00
switchdev
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, fix proto update hook to avoid dup calls	2024-01-25 15:35:30 -08:00
vmw_vsock	virtio/vsock: send credit update during setting SO_RCVLOWAT	2024-01-25 15:35:26 -08:00
wireless	wifi: cfg80211: parse all ML elements in an ML probe response	2024-01-25 15:35:30 -08:00
x25
xdp	xsk: add multi-buffer support for sockets sharing umem	2024-01-10 17:16:54 +01:00
xfrm	ipsec-2023-10-17	2023-10-17 18:21:13 -07:00
compat.c
devres.c
Kconfig
Kconfig.debug
Makefile
socket.c	net: Save and restore msg_namelen in sock_sendmsg	2024-01-10 17:16:51 +01:00
sysctl_net.c