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.
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.html
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://lkml.org/lkml/2009/10/19/50
http://patchwork.kernel.org/patch/54678/
http://secunia.com/advisories/37086
http://secunia.com/advisories/37909
http://secunia.com/advisories/38017
http://secunia.com/advisories/38794
http://secunia.com/advisories/38834
http://www.mandriva.com/security/advisories?name=MDVSA-2009:329
http://www.openwall.com/lists/oss-security/2009/10/19/2
http://www.openwall.com/lists/oss-security/2009/10/19/4
http://www.redhat.com/support/errata/RHSA-2009-1670.html
http://www.redhat.com/support/errata/RHSA-2009-1671.html
http://www.ubuntu.com/usn/usn-864-1
http://www.vupen.com/english/advisories/2010/0528
https://bugzilla.redhat.com/show_bug.cgi?id=529626
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6895
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9921
https://rhn.redhat.com/errata/RHSA-2009-1540.html
https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00190.html
Source: MITRE
Published: 2009-10-22
Updated: 2020-08-12
Type: CWE-400
Base Score: 4.9
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 3.9
Severity: MEDIUM
Base Score: 5.5
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM