CVE-2006-7203

4.0 MEDIUM 0.5% exploit odds No fix listed

What it is

The compat_sys_mount function in fs/compat.c in Linux kernel 2.6.20 and earlier allows local users to cause a denial of service (NULL pointer dereference and oops) by mounting a smbfs file system in compatibility mode ("mount -t smbfs").

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of service disruption.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2007-05-14 17:19 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 22:34 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.5% in the next 30 days (EPSS).
Severity: 4.0 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2007-05-14 17:19 UTC
Last modified: 2026-06-16 22:34 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Record status: Modified

Affected

Linux Kernel ≤ 2.6.20

Attack profile CVSS 2.0 · 4.0

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

Raw vector

AV:L/AC:H/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-2006-7203.md and follow it. Check whether this project is affected by CVE-2006-7203. 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