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CVE-2011-4131· NVD / CVE Program· CNA redhat

The NFSv4 implementation in the Linux kernel before 3.2.2 does not properly handle bitmap sizes in GETACL replies, which allows remote NFS s

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.

MediumCVSS 4.6 · v2.0—No exploit Fix available
Published
May 17, 2012
Updated
Jun 16, 2026
EPSS
0.8% · 54th percentile
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Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

Affected systems

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel3.2
  • linux linux kernel3.2.1

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 3.2.9-13.2.9-1
Red Hat:enterprise_linux:6::clientkernelbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientkernel-debugbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientkernel-debug-debuginfobefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientkernel-debug-develbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfobefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfo-common-i686before 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfo-common-x86_64before 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientkernel-develbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientkernel-docbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientkernel-firmwarebefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientperfbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientperf-debuginfobefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientpython-perfbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::clientpython-perf-debuginfobefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::serverkernel-bootwrapperbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::serverkernel-debuginfo-common-ppc64before 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::serverkernel-debuginfo-common-s390xbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::serverkernel-kdumpbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::serverkernel-kdump-debuginfobefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_linux:6::serverkernel-kdump-develbefore 0:2.6.32-279.el60:2.6.32-279.el6
Red Hat:enterprise_mrg:2:server:el6kernel-rtbefore 0:3.0.18-rt34.53.el6rt0:3.0.18-rt34.53.el6rt
Red Hat:enterprise_mrg:2:server:el6kernel-rt-debugbefore 0:3.0.18-rt34.53.el6rt0:3.0.18-rt34.53.el6rt
Red Hat:enterprise_mrg:2:server:el6kernel-rt-debug-debuginfobefore 0:3.0.18-rt34.53.el6rt0:3.0.18-rt34.53.el6rt

+33

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Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:linux3.2.9-1 · Debian:12Package registry (OSV)
red hat:kernel-rt0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debug0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debug-debuginfo0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debug-devel0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debuginfo0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debuginfo-common-x86_640:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-devel0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-doc0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-firmware0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-trace0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-trace-debuginfo0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-trace-devel0:3.0.18-rt34.53.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
none
Integrity
none
Availability
C · the service can be disrupted
Attack complexity
High
Confidentiality impact
None
Integrity impact
None
Availability impact
C

Weakness class (CWE)

CWE-189 · Numeric Errors

CVSS vector

AV:A/AC:H/Au:N/C:N/I:N/A:C

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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References

All records