The NFSv4 implementation in the Linux kernel before 3.2.2 does not properly handle bitmap…
Priority LOW 23CWE-189Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-189 and the CVSS impact.
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.
Why it matters now
EPSS 0.00767 55th percentileScored 2026-11-07
Fix Fixed Red Hat: 3 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:3.2:*:*:*:*:*:*:* | 3.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.2:rc2:*:*:*:*:*:* | 3.2 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.2:rc3:*:*:*:*:*:* | 3.2 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.2:rc4:*:*:*:*:*:* | 3.2 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.2:rc5:*:*:*:*:*:* | 3.2 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.2:rc6:*:*:*:*:*:* | 3.2 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.2:rc7:*:*:*:*:*:* | 3.2 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.2.1:*:*:*:*:*:*:* | 3.2.1 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.2:rc2:*:*:*:*:*:* Versions 3.2 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.2:rc3:*:*:*:*:*:* Versions 3.2 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.2:rc4:*:*:*:*:*:* Versions 3.2 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.2:rc5:*:*:*:*:*:* Versions 3.2 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.2:rc6:*:*:*:*:*:* Versions 3.2 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.2:rc7:*:*:*:*:*:* Versions 3.2 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.2.1:*:*:*:*:*:*:* Versions 3.2.1 Vulnerable ·Linux
Remediation
Red Hat 3 advisories
- RHSA-2012:1541 Released 2012-12-04 · Red Hat rating Moderatekernel security and bug fix update
- Red Hat Enterprise Linux Server EUS (v. 6.2) kernel-2.6.32-220.30.1.el6, kernel-bootwrapper-2.6.32-220.30.1.el6, kernel-debug-2.6.32-220.30.1.el6 +8
- 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
- RHSA-2012:0862 Released 2012-06-19 · Red Hat rating ModerateRed Hat Enterprise Linux 6 kernel security, bug fix and enhancement update
- Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-279.el6, kernel-debug-2.6.32-279.el6, kernel-debug-devel-2.6.32-279.el6 +4
- Red Hat Enterprise Linux Desktop Optional (v. 6) kernel-2.6.32-279.el6, python-perf-2.6.32-279.el6
- Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-279.el6, kernel-debug-2.6.32-279.el6, kernel-debug-devel-2.6.32-279.el6 +4
- Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel-2.6.32-279.el6, python-perf-2.6.32-279.el6
- Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-279.el6, kernel-bootwrapper-2.6.32-279.el6, kernel-debug-2.6.32-279.el6 +7
- Red Hat Enterprise Linux Server Optional (v. 6) kernel-2.6.32-279.el6, python-perf-2.6.32-279.el6
- Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-279.el6, kernel-debug-2.6.32-279.el6, kernel-debug-devel-2.6.32-279.el6 +4
- Red Hat Enterprise Linux Workstation Optional (v. 6) kernel-2.6.32-279.el6, python-perf-2.6.32-279.el6
- RHSA-2012:0333 Released 2012-02-23 · Red Hat rating Importantkernel-rt security and bug fix update
- Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-3.0.18-rt34.53.el6rt, kernel-rt-debug-3.0.18-rt34.53.el6rt, kernel-rt-debug-devel-3.0.18-rt34.53.el6rt +7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2012:0862 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2012:0862 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2012:0862 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2012:0862 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2012:0862 |
| Red Hat Enterprise Linux Server EUS (v. 6.2) | Fixed | RHSA-2012:1541 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2012:0862 |
| Red Hat Enterprise Linux Server Optional EUS (v. 6.2) | Fixed | RHSA-2012:1541 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2012:0862 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2012:0862 |
| Red Hat MRG Realtime for RHEL 6 Server v.2 | Fixed | RHSA-2012:0333 |
Not affected: 2 products
- Red Hat Enterprise Linux 4
- Red Hat Enterprise Linux 5
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4131
- 2026-10-03 Alias added: GHSA-497c-8qgw-xqvj
References
Other 5
- [oss-security] 20111111 Re: CVE Request -- kernel: nfs4_getfacl decoding kernel oops
- https://bugzilla.redhat.com/show_bug.cgi?id=747106
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bf118a342f10dafe44b14451a1392c3254629a1f
- https://github.com/torvalds/linux/commit/bf118a342f10dafe44b14451a1392c3254629a1f
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2011-4131 · CVE Program
- CVE-2011-4131 · NVD
- FIRST EPSS
- GHSA-497c-8qgw-xqvj · GitHub Advisory Database · CC BY 4.0
- CVE-2011-4131 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences