Resource exhaustion in Linux Kernel
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Linux Kernel
- VMware Esx — versions 4.0
- VMware Vma — versions 4.0
- Canonical Ubuntu Linux — versions 6.06, 8.04, 8.10
- Fedoraproject Fedora — versions 10
- openSUSE — versions 11.0, 11.2
- SUSE Linux Enterprise Desktop — versions 10
- SUSE Linux Enterprise Server — versions 10
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2009/10/19/2 (mailing-list, Exploit, Patch, Mailing List, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- lkml.org/lkml/2009/10/19/50 (mailing-list, Mailing List, Third Party Advisory)
- www.redhat.com/support/errata/RHSA-2009-1671.html (vendor-advisory, Broken Link)
- www.openwall.com/lists/oss-security/2009/10/19/4 (mailing-list, Exploit, Patch, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2009-1540.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.ubuntu.com/usn/usn-864-1 (vendor-advisory, Third Party Advisory)
- secunia.com/advisories/38794 (Broken Link, third-party-advisory)
- lists.vmware.com/pipermail/security-announce/2010/000082.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2009-3621?
- CVE-2009-3621 is a medium-severity vulnerability in Linux Kernel, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2009-10-22.
- How severe is CVE-2009-3621?
- Medium severity. CVSS v3 base score is 5.5 out of 10.