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Anant Thazhemadam 89ff92ad32 net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid 
[ Upstream commit 7ca1db21ef8e0e6725b4d25deed1ca196f7efb28 ]

In p9_fd_create_unix, checking is performed to see if the addr (passed
as an argument) is NULL or not.
However, no check is performed to see if addr is a valid address, i.e.,
it doesn't entirely consist of only 0's.
The initialization of sun_server.sun_path to be equal to this faulty
addr value leads to an uninitialized variable, as detected by KMSAN.
Checking for this (faulty addr) and returning a negative error number
appropriately, resolves this issue.

Link: http://lkml.kernel.org/r/20201012042404.2508-1-anant.thazhemadam@gmail.com
Reported-by: syzbot+75d51fe5bf4ebe988518@syzkaller.appspotmail.com
Tested-by: syzbot+75d51fe5bf4ebe988518@syzkaller.appspotmail.com
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2021-03-16 16:39:51 +08:00
..
6lowpan Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
9p net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid 2021-03-16 16:39:51 +08:00
802 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
8021q Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
appletalk appletalk: Fix atalk_proc_init() return path 2021-03-16 16:33:09 +08:00
atm atm: fix a memory leak of vcc->user_back 2021-03-16 16:37:15 +08:00
ax25 AX.25: Prevent integer overflows in connect and sendmsg 2021-03-16 16:32:42 +08:00
batman-adv batman-adv: mcast: fix duplicate mcast packets from BLA backbone to mesh 2021-03-16 16:37:35 +08:00
bluetooth Bluetooth: Only mark socket zapped after unlocking 2021-03-16 16:39:20 +08:00
bpf Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
bpfilter net/bpfilter: remove superfluous testing message 2021-03-16 16:26:23 +08:00
bridge netfilter: ebtables: Fixes dropping of small packets in bridge nat 2021-03-16 16:39:05 +08:00
caif Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
can net: j1939: j1939_session_fresh_new(): fix missing initialization of skbcnt 2021-03-16 16:38:14 +08:00
ceph libceph: don't omit recovery_deletes in target_copy() 2021-03-16 16:32:16 +08:00
core socket: don't clear SOCK_TSTAMP_NEW when SO_TIMESTAMPNS is disabled 2021-03-16 16:39:27 +08:00
dcb net: DCB: Validate DCB_ATTR_DCB_BUFFER argument 2021-03-16 16:36:26 +08:00
dccp dccp: Fix possible memleak in dccp_init and dccp_fini 2021-03-16 16:29:07 +08:00
decnet Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dns_resolver KEYS: Don't write out to userspace while holding key semaphore 2021-03-16 16:26:42 +08:00
dsa dsa: Allow forwarding of redirected IGMP traffic 2021-03-16 16:36:11 +08:00
ethernet Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
hsr hsr: check protocol version in hsr_newlink() 2021-03-16 16:26:20 +08:00
ieee802154 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ife Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ipv4 tcp: Prevent low rmem stalls with SO_RCVLOWAT. 2021-03-16 16:39:31 +08:00
ipv6 netfilter: nf_log: missing vlan offload tag and proto 2021-03-16 16:38:46 +08:00
iucv Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
kcm Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
key af_key: pfkey_dump needs parameter validation 2021-03-16 16:36:23 +08:00
l2tp l2tp: remove skb_dst_set() from l2tp_xmit_skb() 2021-03-16 16:31:43 +08:00
l3mdev Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
lapb Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
llc net: silence data-races on sk_backlog.tail 2021-03-16 16:36:36 +08:00
mac80211 mac80211: handle lack of sband->bitrates in rates 2021-03-16 16:39:16 +08:00
mac802154 mac802154: tx: fix use-after-free 2021-03-16 16:37:33 +08:00
mpls Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ncsi 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: nftables_offload: KASAN slab-out-of-bounds Read in nft_flow_rule_create 2021-03-16 16:39:27 +08:00
netlabel netlabel: fix problems with mapping removal 2021-03-16 16:35:46 +08:00
netlink genetlink: remove genl_bind 2021-03-16 16:31:42 +08:00
netrom net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node 2021-03-16 16:26:51 +08:00
nfc nfc: Ensure presence of NFC_ATTR_FIRMWARE_NAME attribute in nfc_genl_fw_download() 2021-03-16 16:38:18 +08:00
nsh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
openvswitch openvswitch: handle DNAT tuple collision 2021-03-16 16:38:00 +08:00
packet af_packet: TPACKET_V3: fix fill status rwlock imbalance 2021-03-16 16:33:48 +08:00
phonet Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
psample Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
qrtr net: qrtr: check skb_put_padto() return value 2021-03-16 16:36:30 +08:00
rds rds: Prevent kernel-infoleak in rds_notify_queue_get() 2021-03-16 16:32:48 +08:00
rfkill Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
rose Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
rxrpc rxrpc: Fix server keyring leak 2021-03-16 16:38:05 +08:00
sched net/sched: act_mpls: Add softdep on mpls_gso.ko 2021-03-16 16:39:31 +08:00
sctp sctp: fix sctp_auth_init_hmacs() error path 2021-03-16 16:38:00 +08:00
smc net/smc: fix valid DMBE buffer sizes 2021-03-16 16:38:13 +08:00
strparser Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
sunrpc SUNRPC: Mitigate cond_resched() in xprt_transmit() 2021-03-16 16:39:47 +08:00
switchdev Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tipc tipc: fix memory leak caused by tipc_buf_append() 2021-03-16 16:39:31 +08:00
tls net/tls: sendfile fails with ktls offload 2021-03-16 16:38:13 +08:00
toa Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
unix skbuff: fix a data race in skb_queue_len() 2021-03-16 16:36:50 +08:00
vmw_vsock net: virtio_vsock: Enhance connection semantics 2021-03-16 16:37:43 +08:00
wimax Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
wireless nl80211: fix non-split wiphy information 2021-03-16 16:38:45 +08:00
x25 net/x25: Fix null-ptr-deref in x25_disconnect 2021-03-16 16:32:48 +08:00
xdp xdp: Fix xsk_generic_xmit errno 2021-03-16 16:30:35 +08:00
xfrm xfrm: Use correct address family in xfrm_state_find 2021-03-16 16:38:02 +08:00
Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +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
compat.c net/compat: Add missing sock updates for SCM_RIGHTS 2021-03-16 16:34:05 +08:00
socket.c net: Set fput_needed iff FDPUT_FPUT is set 2021-03-16 16:33:49 +08:00
sysctl_net.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