Description: ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem()
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2219818
 https://www.zerodayinitiative.com/advisories/ZDI-CAN-20479/
Notes:
Bugs:
upstream: released (6.4-rc1) [3ac00a2ab69b34189942afa9e862d5170cdcb018]
6.1-upstream-stable: released (6.1.28) [a70751dd7b60eab025e97e19b6b2477c6eaf2bbb]
5.10-upstream-stable: N/A "Vulnerable code not present"
4.19-upstream-stable: N/A "Vulnerable code not present"
sid: released (6.3.7-1)
6.1-bookworm-security: released (6.1.37-1)
5.10-bullseye-security: N/A "Vulnerable code not present"
4.19-buster-security: N/A "Vulnerable code not present"