Eric Dumazet a239affd93 ipv6: fix potential NULL deref in fib6_add() ... [ Upstream commit 75475bb51e ] If fib6_find_prefix() returns NULL, we should silently fallback using fib6_null_entry regardless of RT6_DEBUG value. syzbot reported: WARNING: CPU: 0 PID: 5477 at net/ipv6/ip6_fib.c:1516 fib6_add+0x310d/0x3fa0 net/ipv6/ip6_fib.c:1516 Modules linked in: CPU: 0 PID: 5477 Comm: syz-executor.0 Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:fib6_add+0x310d/0x3fa0 net/ipv6/ip6_fib.c:1516 Code: 00 48 8b 54 24 68 e8 42 22 00 00 48 85 c0 74 14 49 89 c6 e8 d5 d3 c2 f7 eb 5d e8 ce d3 c2 f7 e9 ca 00 00 00 e8 c4 d3 c2 f7 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 38 80 3c 01 00 RSP: 0018:ffffc90005067740 EFLAGS: 00010293 RAX: ffffffff89cba5bc RBX: ffffc90005067ab0 RCX: ffff88801a2e9dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90005067980 R08: ffffffff89cbca85 R09: 1ffff110040d4b85 R10: dffffc0000000000 R11: ffffed10040d4b86 R12: 00000000ffffffff R13: 1ffff110051c3904 R14: ffff8880206a5c00 R15: ffff888028e1c820 FS: 00007f763783c6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f763783bff8 CR3: 000000007f74d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __ip6_ins_rt net/ipv6/route.c:1303 [inline] ip6_route_add+0x88/0x120 net/ipv6/route.c:3847 ipv6_route_ioctl+0x525/0x7b0 net/ipv6/route.c:4467 inet6_ioctl+0x21a/0x270 net/ipv6/af_inet6.c:575 sock_do_ioctl+0x152/0x460 net/socket.c:1220 sock_ioctl+0x615/0x8c0 net/socket.c:1339 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82 Fixes: 7bbfe00e02 ("ipv6: fix general protection fault in fib6_add()") Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Wei Wang <weiwan@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20231129160630.3509216-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-12-13 18:36:34 +01:00
..
6lowpan
9p	9p: v9fs_listxattr: fix %s null argument warning	2023-11-28 16:56:19 +00:00
802	mrp: introduce active flags to prevent UAF when applicant uninit	2022-12-31 13:14:42 +01:00
8021q	vlan: move dev_put into vlan_dev_uninit	2023-12-08 08:48:02 +01:00
appletalk
atm	atm: hide unused procfs functions	2023-06-09 10:32:26 +02:00
ax25	net: ax25: Fix deadlock caused by skb_recv_datagram in ax25_recvmsg	2022-06-22 14:22:01 +02:00
batman-adv	batman-adv: Hold rtnl lock during MTU update via netlink	2023-08-30 16:18:18 +02:00
bluetooth	Bluetooth: Fix double free in hci_conn_cleanup	2023-11-28 16:56:16 +00:00
bpf	bpf: Move skb->len == 0 checks into __bpf_redirect	2022-12-31 13:14:11 +01:00
bpfilter
bridge	netfilter: nf_tables: add and use BE register load-store helpers	2023-11-28 16:56:24 +00:00
caif	net: caif: Fix use-after-free in cfusbl_device_notify()	2023-03-17 08:48:54 +01:00
can	can: isotp: isotp_sendmsg(): fix TX state detection and wait behavior	2023-11-08 17:26:49 +01:00
ceph	libceph: use kernel_connect()	2023-10-19 23:05:36 +02:00
core	net: annotate data-races around sk->sk_dst_pending_confirm	2023-11-28 16:56:16 +00:00
dcb	net: dcb: choose correct policy to parse DCB_ATTR_BCN	2023-08-11 15:13:53 +02:00
dccp	net: inet: Retire port only listening_hash	2023-11-28 16:56:22 +00:00
dns_resolver
dsa	net: dsa: tag_sja1105: fix MAC DA patching from meta frames	2023-07-23 13:47:30 +02:00
ethernet
ethtool	ethtool: Fix uninitialized number of lanes	2023-05-17 11:50:18 +02:00
hsr	hsr: Prevent use after free in prp_create_tagged_frame()	2023-11-20 11:08:28 +01:00
ieee802154	net: ieee802154: fix error return code in dgram_bind()	2022-11-03 23:59:14 +09:00
ife
ipv4	ipv4: igmp: fix refcnt uaf issue when receiving igmp query packet	2023-12-08 08:48:02 +01:00
ipv6	ipv6: fix potential NULL deref in fib6_add()	2023-12-13 18:36:34 +01:00
iucv	net/iucv: Fix size of interrupt data	2023-03-22 13:31:28 +01:00
kcm	kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg().	2023-09-19 12:23:04 +02:00
key	net: af_key: fix sadb_x_filter validation	2023-08-26 14:23:32 +02:00
l2tp	ipv4, ipv6: Fix handling of transhdrlen in __ip{,6}_append_data()	2023-10-10 21:59:07 +02:00
l3mdev	l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu	2022-04-27 14:38:53 +02:00
lapb
llc	llc: verify mac len before reading mac header	2023-11-20 11:08:28 +01:00
mac80211	wifi: mac80211: don't return unset power in ieee80211_get_tx_power()	2023-11-28 16:56:15 +00:00
mac802154	mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add()	2022-12-14 11:37:25 +01:00
mctp	mctp: perform route lookups under a RCU read-side lock	2023-10-25 11:58:59 +02:00
mpls	net: mpls: fix stale pointer if allocation fails during device rename	2023-02-22 12:57:09 +01:00
mptcp	net: inet: Retire port only listening_hash	2023-11-28 16:56:22 +00:00
ncsi	Revert ncsi: Propagate carrier gain/loss events to the NCSI controller	2023-11-28 16:56:33 +00:00
netfilter	netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test	2023-12-13 18:36:32 +01:00
netlabel	netlabel: fix shift wrapping bug in netlbl_catmap_setlong()	2023-09-19 12:22:29 +02:00
netlink	netlink: Add __sock_i_ino() for __netlink_diag_dump().	2023-07-23 13:46:56 +02:00
netrom	netrom: Deny concurrent connect().	2023-09-19 12:22:35 +02:00
nfc	nfc: nci: fix possible NULL pointer dereference in send_acknowledge()	2023-10-25 11:58:55 +02:00
nsh	net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()	2023-05-24 17:36:51 +01:00
openvswitch	net: openvswitch: fix possible memory leak in ovs_meter_cmd_set()	2023-02-22 12:57:09 +01:00
packet	net/packet: annotate data-races around tp->status	2023-08-16 18:22:01 +02:00
phonet	phonet: refcount leak in pep_sock_accep	2022-01-11 15:35:16 +01:00
psample
qrtr	net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume()	2023-04-20 12:13:53 +02:00
rds	net: prevent address rewrite in kernel_bind()	2023-10-19 23:05:33 +02:00
rfkill	net: rfkill: gpio: prevent value glitch during probe	2023-10-25 11:58:57 +02:00
rose	net/rose: Fix to not accept on connected socket	2023-02-22 12:57:02 +01:00
rxrpc	rxrpc: Fix hard call timeout units	2023-05-17 11:50:17 +02:00
sched	net: sched: cls_u32: Fix allocation size in u32_init()	2023-11-08 17:26:45 +01:00
sctp	sctp: update hb timer immediately after users change hb_interval	2023-10-10 21:59:08 +02:00
smc	net/smc: avoid data corruption caused by decline	2023-12-03 07:31:22 +01:00
strparser
sunrpc	svcrdma: Drop connection after an RDMA Read error	2023-11-28 16:56:29 +00:00
switchdev
tipc	tipc: Fix kernel-infoleak due to uninitialized TLV value	2023-11-28 16:56:23 +00:00
tls	net/tls: do not free tls_rec on async operation in bpf_exec_tx_verdict()	2023-09-19 12:23:04 +02:00
unix	af_unix: fix use-after-free in unix_stream_read_actor()	2023-11-28 16:56:24 +00:00
vmw_vsock	vsock/virtio: initialize the_virtio_vsock before using VQs	2023-11-08 17:26:37 +01:00
wireless	wifi: cfg80211: avoid leaking stack data into trace	2023-10-25 11:59:00 +02:00
x25	net/x25: Fix to not accept on connected socket	2023-02-09 11:26:40 +01:00
xdp	xsk: Fix xsk_diag use-after-free error during socket cleanup	2023-09-19 12:22:58 +02:00
xfrm	xfrm: interface: use DEV_STATS_INC()	2023-10-25 11:58:56 +02:00
compat.c
devres.c
Kconfig	Remove DECnet support from kernel	2023-06-21 15:59:15 +02:00
Makefile	Remove DECnet support from kernel	2023-06-21 15:59:15 +02:00
socket.c	net: prevent address rewrite in kernel_bind()	2023-10-19 23:05:33 +02:00
sysctl_net.c