b3fb3c01eeedd1995c74dbe30fe33f189bc828e2
Adds a check to audit-fd.c to ensure that CAP_AUDIT_WRITE is present in the set of effective capabilities before opening an audit netlink socket. This ensures that unprivileged systemd instances (MANAGER_USER) don't try to log AVC permission checks with the audit subsystem when CAP_AUDIT_WRITE is not present.
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