FKIE_CVE-2009-3621
Vulnerability from fkie_nvd - Published: 2009-10-22 16:00 - Updated: 2026-06-16 23:12
Severity
Summary
net/unix/af_unix.c in the Linux kernel 2.6.31.4 and earlier allows local users to cause a denial of service (system hang) by creating an abstract-namespace AF_UNIX listening socket, performing a shutdown operation on this socket, and then performing a series of connect operations to this socket.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| canonical | ubuntu_linux | 6.06 | |
| canonical | ubuntu_linux | 8.04 | |
| canonical | ubuntu_linux | 8.10 | |
| canonical | ubuntu_linux | 9.04 | |
| canonical | ubuntu_linux | 9.10 | |
| fedoraproject | fedora | 10 | |
| opensuse | opensuse | 11.0 | |
| opensuse | opensuse | 11.2 | |
| suse | suse_linux_enterprise_desktop | 10 | |
| suse | suse_linux_enterprise_desktop | 10 | |
| suse | suse_linux_enterprise_server | 10 | |
| suse | suse_linux_enterprise_server | 10 | |
| vmware | vma | 4.0 | |
| vmware | esx | 4.0 |
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"value": "net/unix/af_unix.c en el kernel de Linux v2.6.31.4 y anteriores permite a usuarios locales causar una denegaci\u00f3n de servicio (el servidor se bloquea) creando un socket abstract-namespace AF_UNIX y realizando una operaci\u00f3n de apagado en ese socket, para luego luego realizar una serie de operaciones de conexi\u00f3n en dicho socket."
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"id": "CVE-2009-3621",
"lastModified": "2026-06-16T23:12:02.200",
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"published": "2009-10-22T16:00:00.640",
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"sourceIdentifier": "secalert@redhat.com",
"vendorComments": [
{
"comment": "Red Hat is aware of this issue and is tracking it via the following bug:\nhttps://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2009-3621\n\nThis issue has been rated as having moderate security impact.\n\nIt was addressed in Red Hat Enterprise Linux 4, 5 and Red Hat Enterprise MRG via: https://rhn.redhat.com/errata/RHSA-2009-1671.html , https://rhn.redhat.com/errata/RHSA-2009-1670.html and https://rhn.redhat.com/errata/RHSA-2009-1540.html respectively.\n\nThis issue is not planned to be fixed in Red Hat Enterprise Linux 3, due to this product being in Production 3 of its maintenance life-cycle, where only qualified security errata of important or critical impact are addressed.\n\nFor further information about Errata Support Policy, visit: http://www.redhat.com/security/updates/errata/",
"lastModified": "2009-12-17T00:00:00",
"organization": "Red Hat"
}
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"value": "CWE-400"
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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