kernel: netns vs proto registration ordering
Published Jun 13, 2012
5.4
MEDIUMCVSS 2.0
EPSS 2.15%
Description
The tunnels implementation in the Linux kernel before 2.6.34, when tunnel functionality is configured as a module, allows remote attackers to cause a denial of service (OOPS) by sending a packet during module loading.
Affected products
No data.
- ≤ 2.6.33.20
- 2.6.33
- 2.6.33.1
- 2.6.33.2
- 2.6.33.3
- 2.6.33.4
- 2.6.33.5
- 2.6.33.6
- 2.6.33.7
- 2.6.33.8
- 2.6.33.9
- 2.6.33.10
- 2.6.33.11
- 2.6.33.12
- 2.6.33.13
- 2.6.33.14
- 2.6.33.15
- 2.6.33.16
- 2.6.33.17
- 2.6.33.18
- 2.6.33.19
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-131.6.1.el6
Fixed · RHSA-2011:0928
Red Hat Enterprise MRG 2
kernel-rt-0:2.6.33.9-rt31.75.el6rt
Fixed · RHSA-2011:1253
Red Hat Enterprise MRG 1
kernel-rt
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-131.6.1.el6 | Fixed | RHSA-2011:0928 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:2.6.33.9-rt31.75.el6rt | Fixed | RHSA-2011:1253 |
| Red Hat Enterprise MRG 1 | kernel-rt | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
The Linux kernel as shipped with Red Hat Enterprise Linux 4, and 5 did not provide support for Network Namespace, and therefore are not affected by this issue. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0928.html, and https://rhn.redhat.com/errata/RHSA-2011-1253.html.
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:N/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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.15% (0.02149) | 81.45th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.15% (0.02149) | 79.67th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.46% (0.00464) | 62.25th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.51% (0.00511) | 77.38th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.51% (0.00511) | 76.73th | v3 (v2023.03.01) |
| Feb 29, 2024 | 0.45% (0.00452) | 74.52th | v3 (v2023.03.01) |
| Jan 12, 2024 | 0.45% (0.00452) | 72.50th | v3 (v2023.03.01) |
| Nov 9, 2023 | 0.49% (0.00494) | 73.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.52% (0.00517) | 73.13th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.21% (0.01213) | 66.13th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.41% (0.01408) | 72.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (8)
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34 x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2011/05/05/6 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2011-1768 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=702303 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978 x_refsource_CONFIRMExploitPatch
- https://nvd.nist.gov/vuln/detail/CVE-2011-1768
- https://www.cve.org/CVERecord?id=CVE-2011-1768
| Link | Providers | Tags |
|---|---|---|
| http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34 | x_refsource_CONFIRM | |
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2011/05/05/6 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2011-1768 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=702303 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978 | x_refsource_CONFIRMExploitPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-1768 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-1768 |
Change history (0)
No recorded changes yet.