Security readout for executives and security teams
An old Linux 2.2 kernel file-sharing service (knfsd) could be crashed by a remote attacker sending a specially crafted request with a negative size value. This is a denial-of-service issue from 2000 affecting legacy Linux NFS servers. Modern systems are not affected, but any surviving Linux 2.2.x host still exposing NFS on a reachable network remains vulnerable to service disruption. Extremely limited today. Exposure requires a Linux 2.2.x kernel running knfsd with NFS reachable by an attacker. Such systems are effectively end-of-life and rare in production. Any residual exposure would be on unmaintained legacy hosts, appliances, or embedded devices still using the 2.2 kernel line. Very low priority for modern environments. Only warrants action if the organization still operates Linux 2.2.x systems, in which case the underlying obsolescence — not this specific CVE — is the real risk that should drive replacement or decommissioning. Mitigation focus: Upgrade any Linux 2.2.x hosts to a currently supported kernel and distribution.; Restrict NFS access with firewall rules so only trusted management networks can reach the service.; Where upgrade is impossible, isolate legacy NFS servers on segmented VLANs with strict ACLs..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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CVE-2000-0344 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
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- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
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Source materials
- CVE List V5 sourceCVE List V5
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CWE details
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