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

net: bridge: mst: fix suspicious rcu usage in br_mst_set_state

I converted br_mst_set_state to RCU to avoid a vlan use-after-free
but forgot to change the vlan group dereference helper. Switch to vlan
group RCU deref helper to fix the suspicious rcu usage warning.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-40920
• https://git.kernel.org/stable/c/406bfc04b01ee47e4c626f77ecc7d9f85135b166
• https://git.kernel.org/stable/c/546ceb1dfdac866648ec959cbc71d9525bd73462
• https://git.kernel.org/stable/c/7caefa2771722e65496d85b62e1dc4442b7d1345
• https://git.kernel.org/stable/c/caaa2129784a04dcade0ea92c12e6ff90bbd23d8