CVE-2009-4271

4.7 MEDIUM 0.3% exploit odds No fix listed

What it is

The Linux kernel 2.6.9 through 2.6.17 on the x86_64 and amd64 platforms allows local users to cause a denial of service (panic) via a 32-bit application that calls mprotect on its Virtual Dynamic Shared Object (VDSO) page and then triggers a segmentation fault.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of service disruption.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2010-03-19 19:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:13 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.3% in the next 30 days (EPSS).
Severity: 4.7 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2010-03-19 19:30 UTC
Last modified: 2026-06-16 23:13 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Record status: Modified

Affected

Linux Kernel 2.6.9
Linux Kernel 2.6.10
Linux Kernel 2.6.11
Linux Kernel 2.6.11.1
Linux Kernel 2.6.11.2
Linux Kernel 2.6.11.3
Linux Kernel 2.6.11.4
Linux Kernel 2.6.11.5

Attack profile CVSS 2.0 · 4.7

Attack vector: Local
Complexity: Medium
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

AV:L/AC:M/Au:N/C:N/I:N/A:C

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-4271.md and follow it. Check whether this project is affected by CVE-2009-4271. 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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References

NVD record · CVE.org record