Skip to content
Fencer Intel
medium 4.6

CVE-2011-4131 json

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

published 2012-05-17 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-4079

cvss
4.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

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.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 3.2.9-1

debian advisories DEBIAN-CVE-2011-4131

  • kernel-rt enterprise mrg 2 3.0.18-rt34.53.el6rt
  • kernel-rt-trace enterprise mrg 2 3.0.18-rt34.53.el6rt
  • kernel-rt-vanilla enterprise mrg 2 3.0.18-rt34.53.el6rt
  • kernel-rt-firmware enterprise mrg 2 3.0.18-rt34.53.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 3.0.18-rt34.53.el6rt
  • kernel RHEL 6 2.6.32-279.el6
  • perf RHEL 6 2.6.32-279.el6
  • python-perf RHEL 6 2.6.32-279.el6

red hat advisories RHSA-2012:1541RHSA-2012:0333RHSA-2012:0862

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-4131 updated cvss 4.6

kernel: nfs4_getfacl decoding kernel oops

  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-279.el6, kernel 2.6.32-279.el6, kernel-firmware 2.6.32-279.el6, kernel-debuginfo-common-i686 2.6.32-279.el6, kernel-debuginfo-common-x86_64 2.6.32-279.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-279.el6, python-perf 2.6.32-279.el6, kernel-debuginfo-common-i686 2.6.32-279.el6, kernel-debuginfo-common-x86_64 2.6.32-279.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-279.el6, kernel 2.6.32-279.el6, kernel-firmware 2.6.32-279.el6, kernel-debuginfo-common-x86_64 2.6.32-279.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-279.el6, python-perf 2.6.32-279.el6, kernel-debuginfo-common-x86_64 2.6.32-279.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-279.el6, kernel 2.6.32-279.el6, kernel-kdump 2.6.32-279.el6, kernel-firmware 2.6.32-279.el6, kernel-bootwrapper 2.6.32-279.el6, kernel-debuginfo-common-i686 2.6.32-279.el6, +3 more
    fixed: vendor fix RHSA-2012:0862
  • Red Hat Enterprise Linux Server EUS (v. 6.2) perf 2.6.32-220.30.1.el6, kernel 2.6.32-220.30.1.el6, kernel-kdump 2.6.32-220.30.1.el6, kernel-firmware 2.6.32-220.30.1.el6, kernel-bootwrapper 2.6.32-220.30.1.el6, kernel-debuginfo-common-i686 2.6.32-220.30.1.el6, +3 more
    fixed: vendor fix RHSA-2012:1541
  • Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-279.el6, python-perf 2.6.32-279.el6, kernel-debuginfo-common-i686 2.6.32-279.el6, kernel-debuginfo-common-ppc64 2.6.32-279.el6, kernel-debuginfo-common-s390x 2.6.32-279.el6, kernel-debuginfo-common-x86_64 2.6.32-279.el6
    fixed: vendor fix RHSA-2012:0862
  • Red Hat Enterprise Linux Server Optional EUS (v. 6.2) kernel 2.6.32-220.30.1.el6, python-perf 2.6.32-220.30.1.el6, kernel-debuginfo-common-i686 2.6.32-220.30.1.el6, kernel-debuginfo-common-ppc64 2.6.32-220.30.1.el6, kernel-debuginfo-common-s390x 2.6.32-220.30.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.30.1.el6
    fixed: vendor fix RHSA-2012:1541
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-279.el6, kernel 2.6.32-279.el6, kernel-firmware 2.6.32-279.el6, kernel-debuginfo-common-i686 2.6.32-279.el6, kernel-debuginfo-common-x86_64 2.6.32-279.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-279.el6, python-perf 2.6.32-279.el6, kernel-debuginfo-common-i686 2.6.32-279.el6, kernel-debuginfo-common-x86_64 2.6.32-279.el6
    fixed: vendor fix RHSA-2012:0862
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.0.18-rt34.53.el6rt, kernel-rt-trace 3.0.18-rt34.53.el6rt, kernel-rt-vanilla 3.0.18-rt34.53.el6rt, kernel-rt-firmware 3.0.18-rt34.53.el6rt, kernel-rt-debuginfo-common-x86_64 3.0.18-rt34.53.el6rt
    fixed: vendor fix RHSA-2012:0333
  • Red Hat Enterprise Linux 4 kernel Red Hat Enterprise Linux 5 kernel
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.6 AV:A/AC:H/Au:N/C:N/I:N/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.