How severe is CVE-2011-4131?

CVE-2011-4131 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-2011-4131 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4131?

CVE-2011-4131 primarily affects Linux Linux Kernel. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4131?

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

When was CVE-2011-4131 published?

CVE-2011-4131 was published on 2012-05-17 and last updated on 2026-06-16.

CVE-2011-4131

CVE-2011-4131 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.6. 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: Medium (CVSS 2.0 base score 4.6)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Linux Linux Kernel
Published: 2012-05-17
Last modified: 2026-06-16

Description

The NFSv4 implementation in the Linux kernel before 3.2.2 does not properly handle bitmap sizes in GETACL replies, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words.

Frequently asked questions

What is CVE-2011-4131?: The NFSv4 implementation in the Linux kernel before 3.2.2 does not properly handle bitmap sizes in GETACL replies, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words.
How severe is CVE-2011-4131?: CVE-2011-4131 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-2011-4131 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4131?: CVE-2011-4131 primarily affects Linux Linux Kernel. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4131?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4131 published?: CVE-2011-4131 was published on 2012-05-17 and last updated on 2026-06-16.

References

Affected products (8)

cpe:2.3:o:linux:linux_kernel:3.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.2:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.2:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.2:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.2:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.2:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.2.1:*:*:*:*:*:*:*

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