CVE-2026-46024 libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()

In the Linux kernel, the following vulnerability has been resolved: libceph: Prevent potential null-ptr-deref in cephhandleauthreply If a message of type CEPHMSGAUTHREPLY contains a zero value for both protocol and result, this is currently not treated as an error. In case of ac-negotiating == tr...