How severe is CVE-2006-4342?

CVE-2006-4342 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2006-4342 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4342?

CVE-2006-4342 affects Redhat Enterprise Linux. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-4342?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-4342 published?

CVE-2006-4342 was published on 2006-10-17 and last updated on 2026-06-16.

CVE-2006-4342

CVE-2006-4342 is a medium-severity vulnerability in Redhat Enterprise Linux with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-667.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.0
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-667
Affected product: Redhat Enterprise Linux
Published: 2006-10-17
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2006-4342?: 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.
How severe is CVE-2006-4342?: CVE-2006-4342 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2006-4342 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4342?: CVE-2006-4342 affects Redhat Enterprise Linux. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-4342?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-4342 published?: CVE-2006-4342 was published on 2006-10-17 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:redhat:enterprise_linux:3.0:*:*:*:*:*:*:*

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