CVE-2008-1940

What it is

The RBAC functionality in grsecurity before 2.1.11-2.6.24.5 and 2.1.11-2.4.36.2 does not enforce user_transition_deny and user_transition_allow rules for the (1) sys_setfsuid and (2) sys_setfsgid calls, which allows local users to bypass restrictions for those calls.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. Limited direct impact.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2008-04-25 06:05 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:52 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: 4.6 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2008-04-25 06:05 UTC

Last modified

2026-06-16 22:52 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-264

Record status

Modified

Affected

• Grsecurity Kernel Patch 2.4.33
• Grsecurity Kernel Patch 2.4.33.2
• Grsecurity Kernel Patch 2.4.33.3
• Grsecurity Kernel Patch 2.4.33.4
• Grsecurity Kernel Patch 2.4.34
• Grsecurity Kernel Patch 2.6.18
• Grsecurity Kernel Patch 2.6.24.4

Attack profile CVSS 2.0 · 4.6

Attack vector

Local

Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

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-2008-1940.md and follow it. Check whether this project is affected by CVE-2008-1940. 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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