CVE-2006-4342

Name: CVE-2006-4342
Creator: NVD / NIST
Published: 2006-10-17T17:07:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.39%

Last modified Jun 16, 2026

CVE-2006-4342 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The kernel in Red Hat Enterprise Linux 3, when running on SMP systems, allows local users to cause a denial of service (deadlock) by running the shmat function on an shm at the same time that shmctl is removing that shm (IPC_RMID), which prevents a spinlock from being unlocked.. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

Description

The kernel in Red Hat Enterprise Linux 3, when running on SMP systems, allows local users to cause a denial of service (deadlock) by running the shmat function on an shm at the same time that shmctl is removing that shm (IPC_RMID), which prevents a spinlock from being unlocked.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.39%

30.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-667

Affected Software

Vendor	Product	Versions
Redhat	Enterprise Linux	3.0

References

http://secunia.com/advisories/22497Broken Link
http://secunia.com/advisories/23064Broken Link
http://support.avaya.com/elmodocs2/security/ASA-2006-254.htmThird Party Advisory
http://www.kb.cert.org/vuls/id/245984Third Party Advisory, US Government Resource
http://www.redhat.com/support/errata/RHSA-2006-0710.htmlBroken Link
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=205618Exploit, Issue Tracking
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9649Broken Link
http://secunia.com/advisories/22497Broken Link
http://secunia.com/advisories/23064Broken Link
http://support.avaya.com/elmodocs2/security/ASA-2006-254.htmThird Party Advisory
http://www.kb.cert.org/vuls/id/245984Third Party Advisory, US Government Resource
http://www.redhat.com/support/errata/RHSA-2006-0710.htmlBroken Link
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=205618Exploit, Issue Tracking
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9649Broken Link

Timeline

Published: Oct 17, 2006
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2006-4342?

How severe is CVE-2006-4342?

CVE-2006-4342 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2006-4342?

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-2006-4342?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST