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CVE-2009-3621 (GCVE-0-2009-3621)

Vulnerability from cvelistv5 – Published: 2009-10-22 15:26 – Updated: 2024-08-07 06:31
VLAI
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
URL Tags
http://www.openwall.com/lists/oss-security/2009/10/19/2 mailing-listx_refsource_MLIST
https://bugzilla.redhat.com/show_bug.cgi?id=529626 x_refsource_CONFIRM
http://lkml.org/lkml/2009/10/19/50 mailing-listx_refsource_MLIST
http://www.redhat.com/support/errata/RHSA-2009-16… vendor-advisoryx_refsource_REDHAT
http://www.openwall.com/lists/oss-security/2009/10/19/4 mailing-listx_refsource_MLIST
https://rhn.redhat.com/errata/RHSA-2009-1540.html vendor-advisoryx_refsource_REDHAT
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.ubuntu.com/usn/usn-864-1 vendor-advisoryx_refsource_UBUNTU
http://secunia.com/advisories/38794 third-party-advisoryx_refsource_SECUNIA
http://lists.vmware.com/pipermail/security-announ… mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://git.kernel.org/?p=linux/kernel/git/davem/n… x_refsource_CONFIRM
http://secunia.com/advisories/37909 third-party-advisoryx_refsource_SECUNIA
https://oval.cisecurity.org/repository/search/def… vdb-entrysignaturex_refsource_OVAL
http://patchwork.kernel.org/patch/54678/ x_refsource_CONFIRM
http://www.redhat.com/support/errata/RHSA-2009-16… vendor-advisoryx_refsource_REDHAT
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://secunia.com/advisories/38834 third-party-advisoryx_refsource_SECUNIA
https://oval.cisecurity.org/repository/search/def… vdb-entrysignaturex_refsource_OVAL
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://secunia.com/advisories/37086 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/38017 third-party-advisoryx_refsource_SECUNIA
https://www.redhat.com/archives/fedora-package-an… vendor-advisoryx_refsource_FEDORA
http://www.vupen.com/english/advisories/2010/0528 vdb-entryx_refsource_VUPEN
Date Public
2009-10-19 00:00
Show details on NVD website
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      "id": "CVE-2009-3621",
      "lastModified": "2024-11-21T01:07:49.477",
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      "published": "2009-10-22T16:00:00.640",
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      "sourceIdentifier": "secalert@redhat.com",
      "vendorComments": "[{\"organization\": \"Red Hat\", \"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\"}]",
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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\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T13:10:14+00:00",
      "cve": "CVE-2009-3621",
      "id": "CVE-2009-3621",
      "initial_release_date": "2009-10-19T00:00:00+00:00",
      "product_status:fixed": "306",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: AF_UNIX: Fix deadlock on connecting to shutdown socket",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2009/cve-2009-3621.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-26T23:48:46Z",
      "cve": "CVE-2009-3621",
      "id": "CVE-2009-3621",
      "initial_release_date": "2023-02-15T06:02:13Z",
      "product_status:known_not_affected": "458",
      "product_status:recommended": "42",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2009-3621",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2009-3621.json",
      "version": "15"
    }
  }
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.