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Markus Theil 25e809bf8b mac80211: fix double free in ibss_leave 
commit 3bd801b14e upstream.

Clear beacon ie pointer and ie length after free
in order to prevent double free.

==================================================================
BUG: KASAN: double-free or invalid-free \
in ieee80211_ibss_leave+0x83/0xe0 net/mac80211/ibss.c:1876

CPU: 0 PID: 8472 Comm: syz-executor100 Not tainted 5.11.0-rc6-syzkaller #0
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5b/0x2c6 mm/kasan/report.c:230
 kasan_report_invalid_free+0x51/0x80 mm/kasan/report.c:355
 ____kasan_slab_free+0xcc/0xe0 mm/kasan/common.c:341
 kasan_slab_free include/linux/kasan.h:192 [inline]
 __cache_free mm/slab.c:3424 [inline]
 kfree+0xed/0x270 mm/slab.c:3760
 ieee80211_ibss_leave+0x83/0xe0 net/mac80211/ibss.c:1876
 rdev_leave_ibss net/wireless/rdev-ops.h:545 [inline]
 __cfg80211_leave_ibss+0x19a/0x4c0 net/wireless/ibss.c:212
 __cfg80211_leave+0x327/0x430 net/wireless/core.c:1172
 cfg80211_leave net/wireless/core.c:1221 [inline]
 cfg80211_netdev_notifier_call+0x9e8/0x12c0 net/wireless/core.c:1335
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2040
 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline]
 call_netdevice_notifiers net/core/dev.c:2066 [inline]
 __dev_close_many+0xee/0x2e0 net/core/dev.c:1586
 __dev_close net/core/dev.c:1624 [inline]
 __dev_change_flags+0x2cb/0x730 net/core/dev.c:8476
 dev_change_flags+0x8a/0x160 net/core/dev.c:8549
 dev_ifsioc+0x210/0xa70 net/core/dev_ioctl.c:265
 dev_ioctl+0x1b1/0xc40 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x148/0x2d0 net/socket.c:1060
 sock_ioctl+0x477/0x6a0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported-by: syzbot+93976391bf299d425f44@syzkaller.appspotmail.com
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Link: https://lore.kernel.org/r/20210213133653.367130-1-markus.theil@tu-ilmenau.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-30 14:32:08 +02:00
..
6lowpan
9p
802
8021q net: vlan: avoid leaks on register_vlan_dev() failures 2021-01-17 14:16:55 +01:00
appletalk
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 null pointer dereference in amp_read_loc_assoc_final_data 2021-03-07 12:34:10 +01:00
bpf bpf: Reject too big ctx_size_in for raw_tp test run 2021-01-27 11:55:07 +01:00
bpfilter
bridge net: bridge: don't notify switchdev for local FDB addresses 2021-03-30 14:32:04 +02:00
caif
can can: isotp: tx-path: zero initialize outgoing CAN frames 2021-03-30 14:32:03 +02:00
ceph
core can: dev: Move device back to init netns on owning netns delete 2021-03-30 14:32:08 +02:00
dcb net: dcb: Accept RTM_GETDCB messages carrying set-like DCB commands 2021-01-23 16:04:01 +01:00
dccp ipv6: weaken the v4mapped source check 2021-03-30 14:32:01 +02:00
decnet
dns_resolver
dsa net: dsa: tag_mtk: fix 802.1ad VLAN egress 2021-03-17 17:06:22 +01:00
ethernet
ethtool ethtool: fix the check logic of at least one channel for RX/TX 2021-03-17 17:06:16 +01:00
hsr net: hsr: add support for EntryForgetTime 2021-03-07 12:34:07 +01:00
ieee802154
ife
ipv4 Revert "netfilter: x_tables: Update remaining dereference to RCU" 2021-03-30 14:32:06 +02:00
ipv6 Revert "netfilter: x_tables: Update remaining dereference to RCU" 2021-03-30 14:32:06 +02:00
iucv net/af_iucv: remove WARN_ONCE on malformed RX packets 2021-03-07 12:34:05 +01:00
kcm
key af_key: relax availability checks for skb size calculation 2021-02-13 13:55:02 +01:00
l2tp net: l2tp: reduce log level of messages in receive path, add counter instead 2021-03-17 17:06:11 +01:00
l3mdev
lapb net: lapb: Copy the skb before sending a packet 2021-02-10 09:29:14 +01:00
llc
mac80211 mac80211: fix double free in ibss_leave 2021-03-30 14:32:08 +02:00
mac802154
mpls net: avoid infinite loop in mpls_gso_segment when mpls_hlen == 0 2021-03-17 17:06:11 +01:00
mptcp ipv6: weaken the v4mapped source check 2021-03-30 14:32:01 +02:00
ncsi net/ncsi: Use real net-device for response handler 2021-01-12 20:18:10 +01:00
netfilter netfilter: x_tables: Use correct memory barriers. 2021-03-30 14:32:06 +02:00
netlabel cipso,calipso: resolve a number of problems with the DOI refcounts 2021-03-17 17:06:15 +01:00
netlink
netrom
nfc tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer 2021-03-04 11:37:36 +01:00
nsh
openvswitch net: openvswitch: fix TTL decrement exception action execution 2021-02-23 15:53:23 +01:00
packet net: fix proc_fs init handling in af_packet and tls 2021-02-23 15:53:23 +01:00
phonet
psample net: psample: Fix netlink skb length with tunnel info 2021-03-07 12:34:07 +01:00
qrtr net: qrtr: fix a kernel-infoleak in qrtr_recvmsg() 2021-03-30 14:31:58 +02:00
rds RDMA: Lift ibdev_to_node from rds to common code 2021-02-26 10:12:59 +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: cls_flower: fix only mask bit check in the validate_ct_state 2021-03-30 14:32:01 +02:00
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: fix refcount leak for rpc auth modules 2021-03-25 09:04:08 +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: better validate user input in tipc_nl_retrieve_key() 2021-03-30 14:31:59 +02:00
tls net: fix proc_fs init handling in af_packet and tls 2021-02-23 15:53:23 +01:00
unix
vmw_vsock selinux: vsock: Set SID for socket returned by accept() 2021-03-30 14:32:03 +02:00
wimax
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
devres.c
Kconfig
Makefile
socket.c
sysctl_net.c