In the Linux kernel, the following vulnerability has been resolved: smb: client: fix missed ses refcounting Use new cifs_smb_ses_inc_refcount() helper to get an active reference of @ses and @ses->dfs_root_ses (if set). This will prevent @ses->dfs_root_ses of being put in the next call to cifs_put_smb_ses() and thus potentially causing an use-after-free bug.
https://git.kernel.org/stable/c/eb382196e6f6e05cfafdab797840e5a96c6e7bf0
https://git.kernel.org/stable/c/bf99f6be2d20146942bce6f9e90a0ceef12cbc1e