In the Linux kernel, the following vulnerability has been resolved: smb: client: guarantee refcounted children from parent session Avoid potential use-after-free bugs when walking DFS referrals, mounting and performing DFS failover by ensuring that all children from parent @tcon->ses are also refcounted. They're all needed across the entire DFS mount. Get rid of @tcon->dfs_ses_list while we're at it, too.
https://git.kernel.org/stable/c/e1db9ae87b7148c021daee1fcc4bc71b2ac58a79
https://git.kernel.org/stable/c/645f332c6b63499cc76197f9b6bffcc659ba64cc
https://git.kernel.org/stable/c/062a7f0ff46eb57aff526897bd2bebfdb1d3046a