CVE-2011-1768

5.4 MEDIUM 2% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 2.1% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2012-06-13 10:24 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:29 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.1% in the next 30 days (EPSS).
Severity: 5.4 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2012-06-13 10:24 UTC
Last modified: 2026-06-16 23:29 UTC
Exploit probability: 2.1% · EPSS, next 30 days
Weakness: CWE-362 · Race condition
Record status: Modified

Affected

Linux Kernel ≤ 2.6.33.20
Linux Kernel 2.6.33
Linux Kernel 2.6.33.1
Linux Kernel 2.6.33.2
Linux Kernel 2.6.33.3
Linux Kernel 2.6.33.4
Linux Kernel 2.6.33.5
Linux Kernel 2.6.33.6

Attack profile CVSS 2.0 · 5.4

Attack vector: Network
Complexity: High
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

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

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2011-1768.md and follow it. Check whether this project is affected by CVE-2011-1768. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record