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CVE-2006-4342

16
FAUCET Score

CVE-2006-4342 describes a denial-of-service vulnerability in Red Hat Enterprise Linux 3 running on SMP systems. Local attackers can trigger a deadlock by concurrently executing shmat and shmctl (IPC_RMID) on the same shared memory segment, preventing a spinlock from being released. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 87th percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: kernel-0:2.4.21-47.0.1.EL
View patch

Vendor Advisories (1)

redhatCVE-2006-4342Important

security flaw

Oct 13, 2006

References

bugzilla.redhat.com / bugzilla/show_bug.cgi
ExploitIssue Tracking
secunia.com / advisories/22497
Broken Link
secunia.com / advisories/23064
Broken Link
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9649
Broken Link
support.avaya.com / elmodocs2/security/ASA-2006-254.htm
Third Party Advisory
kb.cert.org / vuls/id/245984
Third Party AdvisoryUS Government Resource
redhat.com / support/errata/RHSA-2006-0710.html
Broken Link