ksmbd: fix infinite loop caused by next_smb2_rcv_hdr_off reset in error paths

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CVE-2026-23220

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix infinite loop caused by nextsmb2rcvhdroff reset in error paths The problem occurs when a signed request fails smb2 signature verification check. In processrequest, if checksignreq returns an error, setsmb2rspstatuswork...