CVE-2009-3621
First published: Mon Oct 19 2009(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=2.6.31.4 | |
| Ubuntu Linux | =6.06 | |
| Ubuntu Linux | =8.04 | |
| Ubuntu Linux | =8.10 | |
| Ubuntu Linux | =9.04 | |
| Ubuntu Linux | =9.10 | |
| Fedoraproject Fedora | =10 | |
| openSUSE | =11.0 | |
| openSUSE | =11.2 | |
| SUSE Linux Enterprise Desktop | =10-sp2 | |
| SUSE Linux Enterprise Desktop | =10-sp3 | |
| SUSE Linux Enterprise Server | =10-sp2 | |
| SUSE Linux Enterprise Server | =10-sp3 | |
| VMware vMA | =4.0 | |
| VMware ESX | =4.0 | |
| Linux kernel | <=2.6.31.4 | |
| Fedora | =10 | |
| openSUSE libeconf | =11.0 | |
| openSUSE libeconf | =11.2 | |
| VMware ESXi | =4.0 |
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Reference Links
- http://patchwork.kernel.org/patch/54678/
- http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commitdiff;h=77238f2b942b38ab4e7f3aced44084493e4a8675
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=365339
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=365339&action=edit
- https://rhn.redhat.com/errata/RHSA-2009-1540.html
- http://admin.fedoraproject.org/updates/kernel-2.6.30.9-96.fc11
- http://admin.fedoraproject.org/updates/kernel-2.6.27.38-170.2.113.fc10
- https://rhn.redhat.com/errata/RHSA-2009-1671.html
- https://rhn.redhat.com/errata/RHSA-2009-1670.html
- https://bugzilla.redhat.com/show_bug.cgi?id=529626
- http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git%3Ba=commit%3Bh=77238f2b942b38ab4e7f3aced44084493e4a8675
- 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://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://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://www.redhat.com/archives/fedora-package-announce/2009-November/msg00190.html
Frequently Asked Questions
What is the severity of CVE-2009-3621?
CVE-2009-3621 has a high severity rating due to its potential to cause a denial of service by hanging the system.
How do I fix CVE-2009-3621?
To fix CVE-2009-3621, upgrade your Linux kernel to a version later than 2.6.31.4.
Which versions of Linux are affected by CVE-2009-3621?
CVE-2009-3621 affects Linux kernel versions 2.6.31.4 and earlier, along with specific releases of Ubuntu, Fedora, openSUSE, and SUSE Linux Enterprise.
What type of vulnerability is CVE-2009-3621?
CVE-2009-3621 is classified as a denial of service vulnerability that affects abstract-namespace AF_UNIX sockets.
Can local users exploit CVE-2009-3621?
Yes, local users can exploit CVE-2009-3621 by creating specific AF_UNIX sockets to cause the system to hang.
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