How severe is CVE-2012-2133?

CVE-2012-2133 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2012-2133 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-2133?

CVE-2012-2133 primarily affects Linux Linux Kernel. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-2133?

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

When was CVE-2012-2133 published?

CVE-2012-2133 was published on 2012-07-03 and last updated on 2026-06-16.

CVE-2012-2133

CVE-2012-2133 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.0. 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-399.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Linux Linux Kernel
Published: 2012-07-03
Last modified: 2026-06-16

Description

Use-after-free vulnerability in the Linux kernel before 3.3.6, when huge pages are enabled, allows local users to cause a denial of service (system crash) or possibly gain privileges by interacting with a hugetlbfs filesystem, as demonstrated by a umount operation that triggers improper handling of quota data.

Frequently asked questions

What is CVE-2012-2133?: Use-after-free vulnerability in the Linux kernel before 3.3.6, when huge pages are enabled, allows local users to cause a denial of service (system crash) or possibly gain privileges by interacting with a hugetlbfs filesystem, as demonstrated by a umount operation that triggers improper handling of quota data.
How severe is CVE-2012-2133?: CVE-2012-2133 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2012-2133 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-2133?: CVE-2012-2133 primarily affects Linux Linux Kernel. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-2133?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-2133 published?: CVE-2012-2133 was published on 2012-07-03 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3.4:*:*:*:*:*:*:*

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