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CVE-2011-1768

19
FAUCET Score

CVE-2011-1768 describes a denial-of-service vulnerability affecting the Linux kernel, specifically versions prior to 2.6.34, when tunnel functionality is configured as a loadable module. An attacker can trigger an OOPS (kernel panic) by sending a packet during the module loading process. This vulnerability has a CVSS score of 5.4, indicating a medium severity with a network attack vector, high attack complexity, and a complete impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.33.20CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
2.6.33CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.33:*:*:*:*:*:*:*
2.6.33.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.33.1:*:*:*:*:*:*:*
2.6.33.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.33.2:*:*:*:*:*:*:*
2.6.33.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.33.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.4MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.15%
Probability of exploitation in next 30 days
EPSS Percentile
80.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0215 is in the 67th percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-131.6.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:2.6.33.9-rt31.75.el6rt
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise MRG 1Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2011-1768Moderate

kernel: netns vs proto registration ordering

Feb 16, 2010

References

ftp.osuosl.org / pub/linux/kernel/v2.6/ChangeLog-2.6.34
git.kernel.org
bugzilla.redhat.com / show_bug.cgi
github.com / torvalds/linux/commit/d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978
ExploitPatch
openwall.com / lists/oss-security/2011/05/05/6