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Sabyrzhan Tasbolatov 5706880025 net/qrtr: restrict user-controlled length in qrtr_tun_write_iter() 
commit 2a80c15812372e554474b1dba0b1d8e467af295d upstream.

syzbot found WARNING in qrtr_tun_write_iter [1] when write_iter length
exceeds KMALLOC_MAX_SIZE causing order >= MAX_ORDER condition.

Additionally, there is no check for 0 length write.

[1]
WARNING: mm/page_alloc.c:5011
[..]
Call Trace:
 alloc_pages_current+0x18c/0x2a0 mm/mempolicy.c:2267
 alloc_pages include/linux/gfp.h:547 [inline]
 kmalloc_order+0x2e/0xb0 mm/slab_common.c:837
 kmalloc_order_trace+0x14/0x120 mm/slab_common.c:853
 kmalloc include/linux/slab.h:557 [inline]
 kzalloc include/linux/slab.h:682 [inline]
 qrtr_tun_write_iter+0x8a/0x180 net/qrtr/tun.c:83
 call_write_iter include/linux/fs.h:1901 [inline]

Reported-by: syzbot+c2a7e5c5211605a90865@syzkaller.appspotmail.com
Signed-off-by: Sabyrzhan Tasbolatov <snovitoll@gmail.com>
Link: https://lore.kernel.org/r/20210202092059.1361381-1-snovitoll@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-17 11:02:30 +01:00
..
6lowpan
…
9p
net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid
2020-10-12 10:05:47 +02:00
802
…
8021q
net: vlan: avoid leaks on register_vlan_dev() failures
2021-01-17 14:16:55 +01:00
appletalk
appletalk: Fix atalk_proc_init() return path
2020-08-03 15:48:32 -07:00
atm
net: atm: fix update of position index in lec_seq_next
2020-10-31 12:26:30 -07:00
ax25
…
batman-adv
batman-adv: Don't always reallocate the fragmentation skb head
2020-11-27 08:02:55 +01:00
bluetooth
Bluetooth: Fix attempting to set RPA timeout when unsupported
2021-01-09 13:46:23 +01:00
bpf
bpf: Reject too big ctx_size_in for raw_tp test run
2021-01-27 11:55:07 +01:00
bpfilter
Revert "bpfilter: Fix build error with CONFIG_BPFILTER_UMH"
2020-10-15 12:33:24 -07:00
bridge
bridge: mrp: Fix the usage of br_mrp_port_switchdev_set_state
2021-02-17 11:02:29 +01:00
caif
caif: Remove duplicate macro SRVL_CTRL_PKT_SIZE
2020-09-05 15:57:05 -07:00
can
can: isotp: isotp_getname(): fix kernel information leak
2021-01-17 14:17:05 +01:00
ceph
libceph: clear con->out_msg on Policy::stateful_server faults
2020-10-12 15:29:27 +02:00
core
net: gro: do not keep too many GRO packets in napi->rx_list
2021-02-17 11:02:29 +01:00
dcb
net: dcb: Accept RTM_GETDCB messages carrying set-like DCB commands
2021-01-23 16:04:01 +01:00
dccp
tcp: fix race condition when creating child sockets from syncookies
2020-11-23 16:32:33 -08:00
decnet
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
dns_resolver
…
dsa
net: dsa: call teardown method on probe failure
2021-02-17 11:02:28 +01:00
ethernet
…
ethtool
ethtool: fix string set id check
2021-01-06 14:56:48 +01:00
hsr
genetlink: move to smaller ops wherever possible
2020-10-02 19:11:11 -07:00
ieee802154
genetlink: move to smaller ops wherever possible
2020-10-02 19:11:11 -07:00
ife
…
ipv4
udp: ipv4: manipulate network header of NATed UDP GRO fraglist
2021-02-10 09:29:23 +01:00
ipv6
udp: ipv4: manipulate network header of NATed UDP GRO fraglist
2021-02-10 09:29:23 +01:00
iucv
net/af_iucv: set correct sk_protocol for child sockets
2020-11-21 14:43:45 -08:00
kcm
…
key
af_key: relax availability checks for skb size calculation
2021-02-13 13:55:02 +01:00
l2tp
genetlink: move to smaller ops wherever possible
2020-10-02 19:11:11 -07:00
l3mdev
net: Fix some comments
2020-08-27 07:55:59 -07:00
lapb
net: lapb: Copy the skb before sending a packet
2021-02-10 09:29:14 +01:00
llc
…
mac80211
ath9k: fix build error with LEDS_CLASS=m
2021-02-17 11:02:25 +01:00
mac802154
Merge tag 'ieee802154-for-davem-2020-09-08' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan
2020-09-08 20:12:58 -07:00
mpls
mpls: load mpls_gso after mpls_iptunnel
2020-10-20 21:16:45 -07:00
mptcp
mptcp: fix security context on server socket
2021-01-06 14:56:48 +01:00
ncsi
net/ncsi: Use real net-device for response handler
2021-01-12 20:18:10 +01:00
netfilter
netfilter: conntrack: skip identical origin tuple in same zone only
2021-02-17 11:02:26 +01:00
netlabel
netlabel: fix an uninitialized warning in netlbl_unlabel_staticlist()
2020-11-14 12:07:57 -08:00
netlink
netlink: export policy in extended ACK
2020-10-09 20:22:32 -07:00
netrom
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
nfc
NFC: fix possible resource leak
2021-02-03 23:28:51 +01:00
nsh
…
openvswitch
openvswitch: fix error return code in validate_and_copy_dec_ttl()
2020-12-04 15:43:14 -08:00
packet
net/packet: fix packet receive on L3 devices without visible hard header
2020-11-23 17:29:36 -08:00
phonet
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
psample
genetlink: move to smaller ops wherever possible
2020-10-02 19:11:11 -07:00
qrtr
net/qrtr: restrict user-controlled length in qrtr_tun_write_iter()
2021-02-17 11:02:30 +01:00
rds
net/rds: restrict iovecs length for RDS_CMSG_RDMA_ARGS
2021-02-17 11:02:30 +01:00
rfkill
rfkill: Fix use-after-free in rfkill_resume()
2020-11-12 09:18:06 +01:00
rose
rose: Fix Null pointer dereference in rose_send_frame()
2020-11-20 10:04:58 -08:00
rxrpc
rxrpc: Fix clearance of Tx/Rx ring when releasing a call
2021-02-17 11:02:28 +01:00
sched
net_sched: reject silly cell_log in qdisc_get_rtab()
2021-01-27 11:55:24 +01:00
sctp
net: fix iteration for sctp transport seq_files
2021-02-17 11:02:29 +01:00
smc
net/smc: fix direct access to ib_gid_addr->ndev in smc_ib_determine_gid()
2020-11-19 10:59:19 -08:00
strparser
…
sunrpc
SUNRPC: Handle 0 length opaque XDR object data properly
2021-02-13 13:55:12 +01:00
switchdev
net: switchdev: don't set port_obj_info->handled true when -EOPNOTSUPP
2021-02-07 15:37:12 +01:00
tipc
tipc: fix NULL deref in tipc_link_xmit()
2021-01-23 16:04:00 +01:00
tls
net/tls: Protect from calling tls_dev_del for TLS RX twice
2020-11-25 17:31:06 -08:00
unix
networking changes for the 5.10 merge window
2020-10-15 18:42:13 -07:00
vmw_vsock
vsock: fix locking in vsock_shutdown()
2021-02-17 11:02:30 +01:00
wimax
genetlink: move to smaller ops wherever possible
2020-10-02 19:11:11 -07:00
wireless
wext: fix NULL-ptr-dereference with cfg80211's lack of commit()
2021-02-03 23:28:38 +01:00
x25
net/x25: prevent a couple of overflows
2020-12-02 17:26:36 -08:00
xdp
xsk: Clear pool even for inactive queues
2021-01-27 11:55:10 +01:00
xfrm
xfrm: Fix wraparound in xfrm_policy_addr_delta()
2021-02-03 23:28:45 +01:00
compat.c
iov_iter: transparently handle compat iovecs in import_iovec
2020-10-03 00:02:13 -04:00
devres.c
…
Kconfig
drop_monitor: Convert to using devlink tracepoint
2020-09-30 18:01:26 -07:00
Makefile
…
socket.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-10-05 18:40:01 -07:00
sysctl_net.c
…