CVE-2009-0131

What it is

The UFS implementation in the kernel in Sun OpenSolaris snv_29 through snv_90 allows local users to cause a denial of service (panic) via the single posix_fallocate test in the SUSv3 POSIX test suite, related to an F_ALLOCSP fcntl call.

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

1. 2009-01-15 17:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:04 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: 4.9 MEDIUM (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2009-01-15 17:30 UTC

Last modified

2026-06-16 23:04 UTC

Exploit probability

0.3% · EPSS, next 30 days

Record status

Modified

Affected

• Sun Opensolaris snv_29
• Sun Opensolaris snv_30
• Sun Opensolaris snv_31
• Sun Opensolaris snv_32
• Sun Opensolaris snv_33
• Sun Opensolaris snv_34
• Sun Opensolaris snv_35
• Sun Opensolaris snv_36

Attack profile CVSS 2.0 · 4.9

Attack vector

Local

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

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-2009-0131.md and follow it. Check whether this project is affected by CVE-2009-0131. 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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