CVE-2007-4135: The NFSv4 ID mapper (nfsidmap) before 0.17 does not properly handle return values from the getpwnam_r funct...

Security readout for executives and security teams

CVE-2007-4135 is an old NFSv4 identity-mapping bug. When a server has a file owner that does not exist as a local user on the client, affected nfsidmap versions can show the owner as root instead of nobody. That creates ownership confusion and may affect operational trust in NFS file permissions. Exposure is likely limited to legacy Linux or Unix-like systems using NFSv4 ID mapping with nfsidmap earlier than 0.17. The bundle identifies vendor advisories from Red Hat, SUSE, and Mandriva, but does not enumerate exact affected package versions. Treat this as a legacy infrastructure hygiene issue unless NFSv4 remains business-critical. Prioritize remediation where shared file services support regulated, sensitive, or multi-user workloads, because incorrect ownership reporting can undermine access-control assurance. Mitigation focus: Upgrade nfsidmap to version 0.17 or later where applicable.; Apply relevant Red Hat, SUSE, or Mandriva vendor updates.; Check current vendor guidance for unsupported legacy distributions..

Prepared

Jun 29, 2026, 03:52 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.