JLSEC-2026-92

lib/kadm5/kadmrpcxdr.c in MIT Kerberos 5 aka krb5 before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because xdrkadm5principalentrec does not validate the relationship between nkeydata and the keydata array...