linux-stable/net
Fedor Pchelkin e5c15c3839 net: 9p: avoid freeing uninit memory in p9pdu_vreadf
commit ff49bf1867 upstream.

If some of p9pdu_readf() calls inside case 'T' in p9pdu_vreadf() fails,
the error path is not handled properly. *wnames or members of *wnames
array may be left uninitialized and invalidly freed.

Initialize *wnames to NULL in beginning of case 'T'. Initialize the first
*wnames array element to NULL and nullify the failing *wnames element so
that the error path freeing loop stops on the first NULL element and
doesn't proceed further.

Found by Linux Verification Center (linuxtesting.org).

Fixes: ace51c4dd2 ("9p: add new protocol support code")
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Message-ID: <20231206200913.16135-1-pchelkin@ispras.ru>
Cc: stable@vger.kernel.org
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-01-08 11:27:36 +01:00
..
6lowpan
9p net: 9p: avoid freeing uninit memory in p9pdu_vreadf 2024-01-08 11:27:36 +01:00
802 mrp: introduce active flags to prevent UAF when applicant uninit 2023-01-18 11:30:36 +01:00
8021q net: check vlan filter feature in vlan_vids_add_by_dev() and vlan_vids_del_by_dev() 2024-01-08 11:27:34 +01:00
appletalk appletalk: Fix Use-After-Free in atalk_ioctl 2023-12-20 15:38:01 +01:00
atm atm: Fix Use-After-Free in do_vcc_ioctl 2023-12-20 15:38:00 +01:00
ax25 ax25: Fix UAF bugs in ax25 timers 2022-04-27 13:39:46 +02:00
batman-adv batman-adv: Fix batadv_v_ogm_aggr_send memory leak 2023-08-30 16:31:55 +02:00
bluetooth Bluetooth: hci_event: Fix not checking if HCI_OP_INQUIRY has been sent 2024-01-08 11:27:36 +01:00
bpf bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb() 2022-11-25 17:40:29 +01:00
bpfilter
bridge net: bridge: use DEV_STATS_INC() 2023-10-10 21:44:57 +02:00
caif net: caif: Fix use-after-free in cfusbl_device_notify() 2023-03-17 08:31:44 +01:00
can can: bcm: Fix UAF in bcm_proc_show() 2023-08-11 11:45:24 +02:00
ceph libceph: use kernel_connect() 2023-10-25 11:16:51 +02:00
core net: check dev->gso_max_size in gso_features_check() 2024-01-08 11:27:34 +01:00
dcb net: dcb: disable softirqs in dcbnl_flush_dev() 2022-03-08 19:04:10 +01:00
dccp dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses. 2023-11-20 10:29:21 +01:00
decnet Remove DECnet support from kernel 2023-06-21 15:39:57 +02:00
dns_resolver
dsa net: dsa: Add missing of_node_put() in dsa_port_parse_of 2022-03-23 09:10:44 +01:00
ethernet
hsr net: hsr: Fix potential use-after-free 2022-12-08 11:18:33 +01:00
ieee802154 net: ieee802154: fix error return code in dgram_bind() 2022-11-03 23:52:30 +09:00
ife net: sched: ife: fix potential use-after-free 2024-01-08 11:27:34 +01:00
ipv4 net: Remove acked SYN flag from packet in the transmit queue correctly 2023-12-20 15:38:01 +01:00
ipv6 ipv6: fix potential NULL deref in fib6_add() 2023-12-13 17:42:16 +01:00
iucv net/iucv: Fix size of interrupt data 2023-03-22 13:27:10 +01:00
kcm kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg(). 2023-09-23 10:48:15 +02:00
key net: af_key: fix sadb_x_filter validation 2023-08-30 16:31:48 +02:00
l2tp ipv4, ipv6: Fix handling of transhdrlen in __ip{,6}_append_data() 2023-10-10 21:45:01 +02:00
l3mdev
lapb
llc llc: verify mac len before reading mac header 2023-11-20 10:29:21 +01:00
mac80211 wifi: mac80211: mesh_plink: fix matches_local logic 2024-01-08 11:27:33 +01:00
mac802154 mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() 2022-12-14 11:28:28 +01:00
mpls net: mpls: fix stale pointer if allocation fails during device rename 2023-02-22 12:47:21 +01:00
ncsi
netfilter netfilter: xt_owner: Fix for unsafe access of sk->sk_socket 2023-12-13 17:42:17 +01:00
netlabel netlabel: fix shift wrapping bug in netlbl_catmap_setlong() 2023-09-23 10:47:58 +02:00
netlink drop_monitor: Require 'CAP_SYS_ADMIN' when joining "events" group 2023-12-13 17:42:20 +01:00
netrom netrom: Deny concurrent connect(). 2023-09-23 10:48:01 +02:00
nfc nfc: nci: fix possible NULL pointer dereference in send_acknowledge() 2023-10-25 11:16:42 +02:00
nsh net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment() 2023-05-30 12:42:11 +01:00
openvswitch net: openvswitch: fix flow memory leak in ovs_flow_cmd_new 2023-02-22 12:47:12 +01:00
packet packet: Move reference count in packet_sock to atomic_long_t 2023-12-13 17:42:18 +01:00
phonet phonet: refcount leak in pep_sock_accep 2022-01-11 13:58:50 +01:00
psample psample: Require 'CAP_NET_ADMIN' when joining "packets" group 2023-12-13 17:42:20 +01:00
qrtr net: qrtr: fix another OOB Read in qrtr_endpoint_post 2021-09-03 09:58:00 +02:00
rds net: prevent address rewrite in kernel_bind() 2023-10-25 11:16:21 +02:00
rfkill net: rfkill: gpio: prevent value glitch during probe 2023-10-25 11:16:45 +02:00
rose net/rose: fix races in rose_kill_by_device() 2024-01-08 11:27:34 +01:00
rxrpc rxrpc: Fix hard call timeout units 2023-05-17 11:13:24 +02:00
sched net: sched: fix race condition in qdisc_graft() 2023-11-28 16:46:36 +00:00
sctp sctp: update hb timer immediately after users change hb_interval 2023-10-10 21:45:01 +02:00
smc net/smc: fix dangling sock under state SMC_APPFINCLOSEWAIT 2023-11-20 10:29:21 +01:00
strparser
sunrpc SUNRPC: Fix UAF in svc_tcp_listen_data_ready() 2023-08-11 11:45:20 +02:00
switchdev
tipc tipc: Fix kernel-infoleak due to uninitialized TLV value 2023-11-28 16:46:33 +00:00
tls net/tls: Fix race in TLS device down flow 2022-07-29 17:10:32 +02:00
unix af_unix: Fix data-race around unix_tot_inflight. 2023-09-23 10:48:13 +02:00
vmw_vsock vsock/virtio: Fix unsigned integer wrap around in virtio_transport_has_space() 2023-12-20 15:38:01 +01:00
wimax
wireless wifi: cfg80211: fix certs build to not depend on file order 2024-01-08 11:27:35 +01:00
x25 net/x25: Fix to not accept on connected socket 2023-02-22 12:47:12 +01:00
xdp
xfrm xfrm: interface: use DEV_STATS_INC() 2023-10-25 11:16:44 +02:00
compat.c net: Return the correct errno code 2021-06-30 08:48:13 -04:00
Kconfig Remove DECnet support from kernel 2023-06-21 15:39:57 +02:00
Makefile Remove DECnet support from kernel 2023-06-21 15:39:57 +02:00
socket.c net: prevent address rewrite in kernel_bind() 2023-10-25 11:16:21 +02:00
sysctl_net.c