CVE-2024-58071

/// Technical description

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

team: prevent adding a device which is already a team device lower

Prevent adding a device which is already a team device lower,

e.g. adding veth0 if vlan1 was already added and veth0 is a lower of

vlan1.

This is not useful in practice and can lead to recursive locking:

$ ip link add veth0 type veth peer name veth1

$ ip link set veth0 up

$ ip link set veth1 up

$ ip link add link veth0 name veth0.1 type vlan protocol 802.1Q id 1

$ ip link add team0 type team

$ ip link set veth0.1 down

$ ip link set veth0.1 master team0

team0: Port device veth0.1 added

$ ip link set veth0 down

$ ip link set veth0 master team0

============================================

WARNING: possible recursive locking detected

6.13.0-rc2-virtme-00441-ga14a429069bb #46 Not tainted

--------------------------------------------

ip/7684 is trying to acquire lock:

ffff888016848e00 (team->team_lock_key){+.+.}-{4:4}, at: team_device_event (drivers/net/t

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References