How severe is CVE-2007-5966?

CVE-2007-5966 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2007-5966 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-5966?

CVE-2007-5966 primarily affects Linux Linux Kernel. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-5966?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2007-5966 published?

CVE-2007-5966 was published on 2007-12-20 and last updated on 2026-06-16.

CVE-2007-5966

CVE-2007-5966 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 7.2. 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-189.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Linux Linux Kernel
Published: 2007-12-20
Last modified: 2026-06-16

Description

Integer overflow in the hrtimer_start function in kernel/hrtimer.c in the Linux kernel before 2.6.23.10 allows local users to execute arbitrary code or cause a denial of service (panic) via a large relative timeout value. NOTE: some of these details are obtained from third party information.

Frequently asked questions

What is CVE-2007-5966?: Integer overflow in the hrtimer_start function in kernel/hrtimer.c in the Linux kernel before 2.6.23.10 allows local users to execute arbitrary code or cause a denial of service (panic) via a large relative timeout value. NOTE: some of these details are obtained from third party information.
How severe is CVE-2007-5966?: CVE-2007-5966 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2007-5966 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-5966?: CVE-2007-5966 primarily affects Linux Linux Kernel. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-5966?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-5966 published?: CVE-2007-5966 was published on 2007-12-20 and last updated on 2026-06-16.

References

Affected products (11)

cpe:2.3:o:linux:linux_kernel:2.6.23:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.23.9:*:*:*:*:*:*:*

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