CVE-2003-0246

3.6 LOW 0.5% exploit odds Fix listed

What it is

The ioperm system call in Linux kernel 2.4.20 and earlier does not properly restrict privileges, which allows local users to gain read or write access to certain I/O ports.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. Limited direct impact.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2003-06-16 04:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 22:01 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: 3.6 LOW (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2003-06-16 04:00 UTC
Last modified: 2026-06-16 22:01 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Record status: Modified

Affected

Linux Kernel 2.4.0
Linux Kernel 2.4.1
Linux Kernel 2.4.2
Linux Kernel 2.4.3
Linux Kernel 2.4.4
Linux Kernel 2.4.5
Linux Kernel 2.4.6
Linux Kernel 2.4.7

Attack profile CVSS 2.0 · 3.6

Attack vector: Local
Complexity: Low
Authentication: None
Confidentiality: Partial
Integrity: Partial
Availability: None

Raw vector

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

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-2003-0246.md and follow it. Check whether this project is affected by CVE-2003-0246. 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