CVE-2023-53358

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

ksmbd: fix racy issue under cocurrent smb2 tree disconnect

There is UAF issue under cocurrent smb2 tree disconnect. This patch introduce TREE_CONN_EXPIRE flags for tcon to avoid cocurrent access.

This vulnerability has no security impact on Red Hat Enterprise Linux because the in-kernel SMB server (ksmbd) is neither enabled nor shipped in supported kernels. File sharing services within Red Hat environments rely on user-space Samba implementations rather than kernel-space file servers. Therefore, supported Red Hat products do not contain the affected code and are not vulnerable to this race condition.