linux/net/atm
Hyunwoo Kim 3bb41dc361 atm: Fix Use-After-Free in do_vcc_ioctl
[ Upstream commit 24e90b9e34 ]

Because do_vcc_ioctl() accesses sk->sk_receive_queue
without holding a sk->sk_receive_queue.lock, it can
cause a race with vcc_recvmsg().
A use-after-free for skb occurs with the following flow.
```
do_vcc_ioctl() -> skb_peek()
vcc_recvmsg() -> skb_recv_datagram() -> skb_free_datagram()
```
Add sk->sk_receive_queue.lock to do_vcc_ioctl() to fix this issue.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Hyunwoo Kim <v4bel@theori.io>
Link: https://lore.kernel.org/r/20231209094210.GA403126@v4bel-B760M-AORUS-ELITE-AX
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-20 15:17:35 +01:00
..
addr.c
addr.h
atm_misc.c
atm_sysfs.c
br2684.c
clip.c
common.c
common.h
ioctl.c atm: Fix Use-After-Free in do_vcc_ioctl 2023-12-20 15:17:35 +01:00
Kconfig
lec_arpc.h
lec.c
lec.h
Makefile
mpc.c
mpc.h
mpoa_caches.c
mpoa_caches.h
mpoa_proc.c
pppoatm.c
proc.c
protocols.h
pvc.c
raw.c
resources.c
resources.h
signaling.c
signaling.h
svc.c