How severe is CVE-2006-3634?

CVE-2006-3634 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2006-3634 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-3634?

CVE-2006-3634 primarily affects Linux Linux Kernel. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-3634?

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

When was CVE-2006-3634 published?

CVE-2006-3634 was published on 2006-08-04 and last updated on 2026-06-16.

CVE-2006-3634

CVE-2006-3634 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.9)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Linux Linux Kernel
Published: 2006-08-04
Last modified: 2026-06-16

Description

The (1) __futex_atomic_op and (2) futex_atomic_cmpxchg_inatomic functions in Linux kernel 2.6.17-rc4 to 2.6.18-rc2 perform the atomic futex operation in the kernel address space instead of the user address space, which allows local users to cause a denial of service (crash).

Frequently asked questions

What is CVE-2006-3634?: The (1) __futex_atomic_op and (2) futex_atomic_cmpxchg_inatomic functions in Linux kernel 2.6.17-rc4 to 2.6.18-rc2 perform the atomic futex operation in the kernel address space instead of the user address space, which allows local users to cause a denial of service (crash).
How severe is CVE-2006-3634?: CVE-2006-3634 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2006-3634 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-3634?: CVE-2006-3634 primarily affects Linux Linux Kernel. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-3634?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-3634 published?: CVE-2006-3634 was published on 2006-08-04 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:o:linux:linux_kernel:2.6.17:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.17:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.17:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.18:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.18:rc2:*:*:*:*:*:*

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