Security readout for executives and security teams
This is an old Linux kernel CIFS client flaw. If a system running Linux 2.6.29 or earlier mounts a malicious SMB/CIFS share, a crafted Tree Connect response with an overly long nativeFileSystem value can overflow a kernel buffer and crash the system. Sources describe denial of service, not confirmed code execution. Exposure is mainly legacy Linux systems using kernels 2.6.29 or earlier with CIFS/SMB client mounts. Systems that do not mount untrusted SMB/CIFS shares are less exposed. Modern supported distributions are likely patched, but legacy appliances and frozen embedded builds need verification. Treat as a targeted legacy exposure issue, not a current internet-wide emergency based on the supplied evidence. Prioritize if the environment still contains old Linux systems, storage appliances, virtualization platforms, or embedded devices that mount SMB/CIFS shares. Mitigation focus: Upgrade affected Linux kernels or apply vendor kernel security updates.; Check Debian, SUSE, Fedora, VMware, or other vendor guidance for exact fixed packages.; Avoid mounting SMB/CIFS shares from untrusted or unauthenticated servers..
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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ATT&CK lookup starting points
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CVE-2009-1439 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- FEDORA-2009-5356CVE reference · vendor-advisory, x_refsource_FEDORA
- oval:org.mitre.oval:def:8265CVE reference · vdb-entry, signature
- https://bugzilla.redhat.com/show_bug.cgi?id=494275CVE reference · x_refsource_CONFIRM
- https://bugzilla.novell.com/show_bug.cgi?id=492282CVE reference · x_refsource_CONFIRM
- FEDORA-2009-5383CVE reference · vendor-advisory, x_refsource_FEDORA
- oval:org.mitre.oval:def:10321CVE reference · vdb-entry, signature
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.