kernel: nfs4_getfacl decoding kernel oops
Published May 17, 2012
4.6
MEDIUMCVSS 2.0
EPSS 0.77%
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.
Affected products
No data.
- 3.2
- 3.2
- 3.2
- 3.2
- 3.2
- 3.2
- 3.2
- 3.2.1
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-279.el6
Fixed · RHSA-2012:0862
Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node Only
kernel-0:2.6.32-220.30.1.el6
Fixed · RHSA-2012:1541
Red Hat Enterprise MRG 2
kernel-rt-0:3.0.18-rt34.53.el6rt
Fixed · RHSA-2012:0333
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-279.el6 | Fixed | RHSA-2012:0862 |
| Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node Only | kernel-0:2.6.32-220.30.1.el6 | Fixed | RHSA-2012:1541 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:3.0.18-rt34.53.el6rt | Fixed | RHSA-2012:0333 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 as it does not provide support for NFS ACLs. This issue does not affect the Linux kernel as shipped with Red Hat Enterprise Linux 5. This has been addressed in Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2012-0333.html. Future kernel updates in Red Hat Enterprise Linux 6 may address this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:A/AC:H/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.77% (0.00767) | 53.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.78% (0.00775) | 50.81th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.26% (0.00261) | 47.46th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.25% (0.00251) | 65.56th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.25% (0.00251) | 64.08th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.25% (0.00251) | 61.17th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.54% (0.01537) | 74.00th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.69% (0.02686) | 82.44th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (14)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bf118a342f10dafe44b14451a1392c3254629a1f x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081280.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2012-0862.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2012-1541.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/48898 third-party-advisoryx_refsource_SECUNIA
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2011/11/12/1 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2011-4131 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=747106 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/bf118a342f10dafe44b14451a1392c3254629a1f x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2011-4131
- https://www.cve.org/CVERecord?id=CVE-2011-4131
Change history (0)
No recorded changes yet.