CVE-2006-6730

Summary

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.

Affected Software

VendorProductVersion RangeStatus
n/an/an/aaffected

Weaknesses

  • n/a

ADP Enrichment

CVE Program Container

Additional References

References