CVE-2009-3621
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 1.0% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.0% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.0% · EPSS, next 30 days
- Weakness
- CWE-400 · Uncontrolled resource consumption
- Record status
- Modified
Affected
- 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 11.0
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2009-3621.md and follow it. Check whether this project is affected by CVE-2009-3621. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://www.openwall.com/lists/oss-security/2009/10/19/2
- http://www.openwall.com/lists/oss-security/2009/10/19/4
- http://www.openwall.com/lists/oss-security/2009/10/19/2
- http://www.openwall.com/lists/oss-security/2009/10/19/4
References
- 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://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