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loongarch-next
linux-loongson/net/vmw_vsock
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Budimir Markovic aba0c94f61 vsock: Do not allow binding to VMADDR_PORT_ANY 
It is possible for a vsock to autobind to VMADDR_PORT_ANY. This can
cause a use-after-free when a connection is made to the bound socket.
The socket returned by accept() also has port VMADDR_PORT_ANY but is not
on the list of unbound sockets. Binding it will result in an extra
refcount decrement similar to the one fixed in fcdd2242c0 (vsock: Keep
the binding until socket destruction).

Modify the check in __vsock_bind_connectible() to also prevent binding
to VMADDR_PORT_ANY.

Fixes: d021c34405 ("VSOCK: Introduce VM Sockets")
Reported-by: Budimir Markovic <markovicbudimir@gmail.com>
Signed-off-by: Budimir Markovic <markovicbudimir@gmail.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://patch.msgid.link/20250807041811.678-1-markovicbudimir@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-08 12:55:00 -07:00
..
af_vsock_tap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
af_vsock.c vsock: Do not allow binding to VMADDR_PORT_ANY 2025-08-08 12:55:00 -07:00
diag.c sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
hyperv_transport.c hv_sock: Return the readable bytes in hvs_stream_has_data() 2025-07-09 19:29:52 -07:00
Kconfig vsock: add vsock_loopback transport 2019-12-11 15:01:23 -08:00
Makefile vsock: support sockmap 2023-03-29 08:19:38 +01:00
virtio_transport_common.c vsock/virtio: Allocate nonlinear SKBs for handling large transmit buffers 2025-08-01 09:11:09 -04:00
virtio_transport.c vsock/virtio: Rename virtio_vsock_skb_rx_put() 2025-08-01 09:11:09 -04:00
vmci_transport_notify_qstate.c vmci/vsock: check SO_RCVLOWAT before wake up reader 2022-08-23 10:43:12 +02:00
vmci_transport_notify.c vmci/vsock: check SO_RCVLOWAT before wake up reader 2022-08-23 10:43:12 +02:00
vmci_transport_notify.h vsock: remove include/linux/vm_sockets.h file 2019-11-14 18:12:17 -08:00
vmci_transport.c vsock/vmci: Clear the vmci transport packet properly when initializing it 2025-07-03 12:52:52 +02:00
vmci_transport.h vsock: Remove unused function declarations 2023-07-31 14:41:08 -07:00
vsock_addr.c vsock_addr: Check for supported flag values 2020-12-14 19:33:39 -08:00
vsock_bpf.c vsock/bpf: Warn on socket without transport 2025-02-18 12:00:01 +01:00
vsock_loopback.c vsock/virtio: add SIOCOUTQ support for all virtio based transports 2024-08-02 09:20:28 +01:00