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CVE-2006-6730
OpenBSD and NetBSD permit usermode code to kill the display server and write to the X.Org /dev/xf86 device, which allows local users with…
Medium6.6EPSS 0.26%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
OpenBSD and NetBSD permit usermode code to kill the display server and write to the X.Org /dev/xf86 device, which allows local users with root privileges to reduce securelevel by replacing the System Management Mode (SMM) handler via a write to an SMRAM address within /dev/xf86 (aka the video card memory-mapped I/O range), and then launching the new handler via a System Management Interrupt (SMI), as demonstrated by a write to Programmed I/O port 0xB2.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.6 | AV:L/AC:M/Au:S/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 0.26% · top 82% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.6.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (6)
- 20061215 Re: The (in)security of Xorg and DRI (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- [Xorg] 20040613 DRI merging (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 20061218 Re: The (in)security of Xorg and DRI (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://www.ssi.gouv.fr/fr/sciences/fichiers/lti/cansecwest2006-duflot-paper.pdf (opens in a new tab)x_refsource_MISCx_transferred
- http://www.cansecwest.com/slides06/csw06-duflot.ppt (opens in a new tab)x_refsource_MISCx_transferred
- 20061214 The (in)security of Xorg and DRI (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2006-6730)Record last updated .