CVE-2009-3621
MEDIUMCVSS 5.5/10EPSS 0.99%
Last modified
CVE-2009-3621 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.99% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | <= 2.6.31.4 | — |
| 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 | Sp2 |
| Suse | Suse Linux Enterprise Server | 10 | Sp2 |
| Vmware | Vma | 4.0 | — |
| Vmware | Esx | 4.0 | — |
References
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.htmlMailing List, Third Party Advisory
- http://lists.vmware.com/pipermail/security-announce/2010/000082.htmlMailing List, Third Party Advisory
- http://lkml.org/lkml/2009/10/19/50Mailing List, Third Party Advisory
- http://patchwork.kernel.org/patch/54678/Exploit, Mailing List, Third Party Advisory
- http://secunia.com/advisories/37086Broken Link
- http://secunia.com/advisories/37909Broken Link
- http://secunia.com/advisories/38017Broken Link
- http://secunia.com/advisories/38794Broken Link
- http://secunia.com/advisories/38834Broken Link
- http://www.openwall.com/lists/oss-security/2009/10/19/2Exploit, Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2009/10/19/4Exploit, Mailing List, Patch, Third Party Advisory
- http://www.ubuntu.com/usn/usn-864-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=529626Exploit, Issue Tracking, Third Party Advisory
- https://rhn.redhat.com/errata/RHSA-2009-1540.htmlThird Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00190.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.htmlMailing List, Third Party Advisory
- http://lists.vmware.com/pipermail/security-announce/2010/000082.htmlMailing List, Third Party Advisory
- http://lkml.org/lkml/2009/10/19/50Mailing List, Third Party Advisory
- http://patchwork.kernel.org/patch/54678/Exploit, Mailing List, Third Party Advisory
- http://secunia.com/advisories/37086Broken Link
- http://secunia.com/advisories/37909Broken Link
- http://secunia.com/advisories/38017Broken Link
- http://secunia.com/advisories/38794Broken Link
- http://secunia.com/advisories/38834Broken Link
- http://www.openwall.com/lists/oss-security/2009/10/19/2Exploit, Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2009/10/19/4Exploit, Mailing List, Patch, Third Party Advisory
- http://www.ubuntu.com/usn/usn-864-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=529626Exploit, Issue Tracking, Third Party Advisory
- https://rhn.redhat.com/errata/RHSA-2009-1540.htmlThird Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00190.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2009-3621?
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.
How severe is CVE-2009-3621?
CVE-2009-3621 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.
How do I fix CVE-2009-3621?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2009-3621?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST