virtio/vsock: Fix accept_queue memory leak (CVE-2024-53119)

Summary

virtio/vsock: Fix accept_queue memory leak

Original description

The description as published by the source.

In the Linux kernel, the following vulnerability has been resolved:

virtio/vsock: Fix accept_queue memory leak

As the final stages of socket destruction may be delayed, it is possible
that virtio_transport_recv_listen() will be called after the accept_queue
has been flushed, but before the SOCK_DONE flag has been set. As a result,
sockets enqueued after the flush would remain unremoved, leading to a
memory leak.

vsock_release
__vsock_release
lock
virtio_transport_release
virtio_transport_close
schedule_delayed_work(close_work)
sk_shutdown = SHUTDOWN_MASK
(!) flush accept_queue
release
virtio_transport_recv_pkt
vsock_find_bound_socket
lock
if flag(SOCK_DONE) return
virtio_transport_recv_listen
child = vsock_create_connected
(!) vsock_enqueue_accept(child)
release
close_work
lock
virtio_transport_do_close
set_flag(SOCK_DONE)
virtio_transport_remove_sock
vsock_remove_sock
vsock_remove_bound
release

Introduce a sk_shutdown check to disallow vsock_enqueue_accept() during
socket destruction.

unreferenced object 0xffff888109e3f800 (size 2040):
comm "kworker/5:2", pid 371, jiffies 429494010…

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"5.10.0"},{"fixed":"5.10.232"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.119"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.63"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.11.10"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2024-53119 linux Fixed in: 5.10.234-1
Ubuntu UBUNTU-CVE-2024-53119 linux-hwe-edge

Summary

Original description

Affected packages

Fix status by distribution

References